New Early Cretaceous Dinosaur Tracks from Southwestern Arkansas

Friday, December 30, 2011




Earlier this summer some new tracks, most notably sauropods and theropods, were found in southwestern Arkansas, in the same gypsum quarry where other tracks were located in the 1980's. Back then, Jeff Pittman had been doing some work at the quarry and often was displeased with the potholes he had to drive across every day. In late 1983 he and Dave Gillette confirmed that the "potholes" were actually thousands of sauropod tracks. The tracks were destroyed the next year. An account of that story can be found here.



The large theropod tracks at the Arkansas site look very similar to a new track series near Moab near the base of Ruby Ranch Member of Cedar Mountain Formation (picture right). This site is currently being developed into a protected interpreted trail by the BLM. Stay tuned for more information on this site as it becomes available. The site is being worked on by Brent Breithaupt (BLM regional paleontologist), Neffra Matthews (BLM), and Martin Lockley (CU Denver - retired). It should prove to be a very interesting site once it is described. Work is planned to compare this site to the Arkansas site.

The story below is the report from the University of Arkansas, my alma mater, who worked most recently on the Arkansas tracks. I was not involved in the work at this site. If you have any specific questions please direct them to Steve Boss.

For more information related to dinosaurs, visit rareresource.com.

Palentologist Job openings: internships, summer field work and even a few "real" jobs


For all those students and recent graduates who are going to be looking for work this summer, now is the time to start paying attention (there are even a few "real" jobs showing up). Jobs and internships have started to be advertised and are often popping up until around February/March, so keep your eyes peeled. Check the SVP jobs page for updates as well.

Here are a few that are currently open:

2012 GeoCorp Positions (applications due by February 1, 2012) -

Badlands National Park (Interior, SD): Field Paleontologist
Badlands National Park (Interior, SD): Quarry Paleontologist
Dinosaur National Monument (Jensen, UT): Field Paleontologist (2 Positions)
Dinosaur National Monument (Jensen, UT): Information Technology / Paleontologist
Great Basin National Park (Baker, NV): Field Paleontologist (2 Positions)
Bryce Canyon National Park (Bryce Canyon, UT): Field Paleontologist / Geomorphologist / Geologist
Wind Cave National Park (Hot Springs, SD): Field Paleontologist / Preparator / Curator
John Day Fossil Beds National Monument (Kimberly, OR): Geologist / Paleontologist
John Day Fossil Beds National Monument (Kimberly, OR): Geologist / Paleontologist [Guest Scientist] *
Grand Canyon National Park (South Rim, AZ): Paleontologist
Denali National Park and Preserve (AK): Paleontologist / GIS Technician (2 positions)
Florissant Fossil Beds National Monument (Florissant, CO): Paleontology / Museum Intern (2 Positions)
Florissant Fossil Beds National Monument (Florissant, CO): Paleontology Intern [Diversity Internship] **
Guadalupe Mountains National Park (Salt Flat, TX): Paleontology Technician
Fossil Butte National Monument (Kemmerer, WY): Public Education Geology / Paleontology (2 Positions)
Fossil Butte National Monument (Kemmerer, WY): Paleontology Museum Technician [Diversity Internship] **
White Sands National Monument (Alamogordo, NM): Field Paleontologist [Diversity Internship] **



Petrified Forest National Park
Petrified Forest National Park in northeastern Arizona currently has a position open for a GS-7 Physical Science Technician. This is a full-time seasonal position that will start in May of 2012 and continuing through August of 2012 (dates are flexible for students). This position will be the lead for a field based program working in exposures of the Upper Triassic Chinle Formation, including intensive prospecting as well as excavation of vertebrate fossils from existing quarries. As the lead this person will oversee all aspects of field work including daily supervision of student interns. This position will work closely with the Park Paleontologist to successfully carryout and document this work. Interested applicants should have experience in the collection of vertebrate fossils, especially successful construction and removal of field jackets as well as the willingness/ability to supervise this type of work. This is a U. S. federal government position open to all U.S. citizens. The incumbent must possess a valid U. S. drivers license. This job also requires the successful completion of a background check as currently required for all U. S. Federal positions.

For more information and to apply please see the current job announcement at www.usajobs.gov
(http://www.usajobs.gov/GetJob/ViewDetails/303892400). Please review all details especially the section on "How to Apply".
For more information related to dinosaurs, visit rareresource.com.

Jurassic Period CSI

Thursday, December 29, 2011



Early last year I completed filming a new series for the National Geographic Channel. The fruits of that labour are starting to appear on TV screens around the globe. This series is not just about palaeontology…although dinosaurs are clearly an important theme.

The series explores many new techniques in the earth, physical and biological sciences, from proteomics to particles physics, and from locomotion to geochemistry. The series would not have been possible without the support and collaboration of many scientists at the University of Manchester, but especially Roy Wogelius (SEAES), David Hodgetts (SEAES), Bill Sellers (FLS), Paul Mummery (Materials), Chris Martin (Materials), Phil Withers (Materials), Adam McMahon (Wolfson Molecular Imaging Centre), Terry Brown (MIB), Alan Crossman (FLS), Jon Codd (FLS), Mark Ferguson (FLS), Matthew Cobb (FLS), Lee Margetts (Research Computing Services) and the staff of the Manchester Museum.

The series will be transmitted in the UK from February 3rd (National Geographic Channel Wild), then in Canada, France, Russia, Turkey, Australia, New Zealand, Japan, Asia (distributed through Taiwan Nat Geo), Spain, Portugal, Italy, Germany and South America National Geographic.



For more information related to dinosaurs, visit rareresource.com.

Latest findout full dinosaur fossil


Even after a good nights sleep....the dueling dinosaurs are still amazing. To say they are not the most impressive dinosaurs I have ever seen, would be the understatement of the century.

When Pete Larson explained that these were his favorite dinosaur fossils....ever...I knew they would be good. However, nothing could have prepared me for the site that met my eyes yesterday in Montana. The preservation of the theropod dinosaurs bone is akin to black porcelain and the ceratopsian it choose an immortal embrace with, is a stunning dusk brown.
dinosaur fossils
These timeless beauties will someday be the centre-piece of a VERY lucky museum. I am grateful to have seen these beautiful fossils in transition between their 65 million year old tomb and their future resting place.

The rancher who dug-up the specimens and the couple who have lovingly prepped the bones have only added to what is an amazing specimen. Folks who devote their lives to such endeavors have my heartfelt respect and special thanks for showing me their special find.

Since I picked-up my first fossil as a 7 year old and asked the simple question, 'What is this?'...I have dreamt of seeing such a fossil (ideally finding it myself, but hey...I'm not choosy). Even when we were digging-up the dinosaur mummy ('Dakota') in 2006, I joked that the only thing that could make the fossil better, was a T. rex holding the tip of Dakota's tail between its teeth. Little did I know, that such a fossil was literally being excavated as I said those words....a fossil that pretty much fulfills my optimistic statement.


For more information related to dinosaurs, visit rareresource.com.

Dinosaur embryo's on acid?

Wednesday, December 28, 2011



The flight to the UK was thankfully uneventful. The food was predictably scary and the atmosphere thick by the time we arrived in Manchester. I think two hours sleep is as much can be expected on a trans-Atlantic in bucket class. I forced myself to sleep, as I knew I would soon have to be functioning on UK-time...a nasty prospect when flying West to East.

Arriving to an overcast and cold morning in Manchester, I was soon through customs, acquired luggage and headed for the train to Manchester. At 10am I was stood in my office, slightly phased...and then the day could begin, albeit cheated of a good nights sleep.

My first port of call in Manchester was Dr Roy Wogelius, an inorganic geochemist in the School of Earth, Atmospheric & Environmental Sciences. He has been leading on several papers within the palaeontology research group, on the preservation of soft tissue in the fossil record. Roy is a good colleague and a great friend who has provided a paradigm shift in my understanding of what happens when you bury a lump of animal in the ground. This might sound a simple thing to answer, but the pathways of elements around and within this system is not fully understood and are critical to our understanding of what happens when you bury anything in the ground. In our world of waste and pollutants, this question of what happens when you bury something is vital. This is the world of the science of taphonomy (literally meaning 'burial laws').

Roy and many others in the palaeontology research group have been working on everything from 65 million year old dinosaur skin, 120 million year old feathers, 50 million year old lizard skin to 80 million year old dinosaur egg shell (with bits of embryonic skin with bone preserved inside!). We are keen to quantify which elements in the fossils have remained relatively stable (and in place) since the tissue (bone, skin, etc) were originally formed and which components came from the processes associated with the fossilisation of the said tissues. What appeared a simple question of mapping and identifying the composition of the fossils, has become a major research program for the Manchester group over the past 5 years.

This work all started when I was having lunch with colleagues and we started talking about the 'mummified' dinosaur that had been discovered in North Dakota. Roy was sat at the table and joined in the conversation, as we munched our way through our curries. It was clear that he would make a major contribution to the research program...and that has to be the biggest understatement I have ever made! He has dragged me into the world of geochemistry and its a journey that I am thoroughly enjoying, albeit it quite hard get my head around sometimes (nothing that a good read cannot put right). The early work we undertook on the dinosaur mummy was published last year in the Proceedings of the Royal Society Series B (Manning et al 2009) and signified the start of my submersion into geochemistry.


For more information related to dinosaurs, visit rareresource.com.

Stuffing the dinosaur at Christmas



One in particular put Solnhofen on the map: Archaeopteryx, long famous as the “first true bird.” A single feather was discovered in 1860, a tantalizing glimpse of the creature it fell from. Beginning the very next year, a series of Archaeopteryx fossils began to come to light, at an irregular rate, and eleven specimens are currently recognized (one from only a few months ago). From its many dinosaurian skeletal features, its long bony tail, and the fine teeth in its jaws, Archaeopteryx might easily have been identified as a small theropod dinosaur, and indeed an amateur mistakenly classified one specimen as the small predatory dinosaur Compsognathus. However, the marvelous preservation afforded by the Solnhofen limestone has given us specimens of Archaeopteryx surrounded by imprints of their feathers, showing that they looked rather like a modern magpie in their plumage. Wing feathers are asymmetrical like those of modern birds’ flight feathers, showing adaptation for aerodynamic use. So detailed are some of the fossils that we can even detect the fine structure of some of these feathers, showing for instance that the fibers of the large flight feathers of Archaeopteryx were organized via the barb-and-barbule arrangement that makes modern bird feathers so stable and structurally effective, despite their lightweight and delicate construction.

Several years ago I first visited the Humboldt Museum (Museum für Naturkunde) in Berlin, the home of arguably the most beautiful Archaeopteryx fossil in the world. Discovered in 1876or 1877, it lies on its back with its wings widespread, tail pointing down and head swung over its back. More important, the arms (or, should I say, wings) and tail are surrounded by stunningly clear impressions of feathers. If I had the opportunity to save any single fossil in the world, it would be this one. It is simply stunning.

The roast turkey that many of you might well partake on December 25th, is a direct descendant of a distant maniraptoran theropod dinosaur. The expression “as rare as hen’s teeth” is based upon the reality of socketed teeth growing in the jaws of birds, courtesy of their ancestral toothy theropod dinosaur gene being activated and socketed teeth growing during the chicken’s development. However, you don’t need ‘hens teeth’ to make your turkey a dinosaur…as you tuck into your meal, take time to nibble the ‘arm’ to reveal the fingers, often still tipped with tiny claws. As you pull the wish-bone (fused clavicles) think of Velociraptor and T. rex…who also share this very theropod character. Its food for thought, that 65 million years ago, it was probably our ancestors that were on the menu for the turkeys ancestors…vengeance is a dish best served 65 million years later!

For more information related to dinosaurs, visit rareresource.com.

WMU fossil hunters using satellites

Tuesday, December 27, 2011

dinosaur fossils


We’ve all looked for fossils at one time or another. But professional fossil hunters need a better way to find their treasures than amateurs. And two professors at Western Michigan University have come up with a system they hope will improve the field of paleontology. WMUK’s Eric Hyland reports:



At the Paleontology Lab at Moore Hall Professor Robert Anemone shows off some of his fossil finds.

“And what I have here is half of a lower jaw with all the teeth of an early carnivorous mammal. We see the sharp canine the slashing teeth of an animal that was a meat eater.”

He also shows a piece of a different kind of extinct mammal.

“We also have some nice examples of herbivorous mammals. Here’s one it’s an extinct form called Manisca theorium, but it probably would have looked much like some of the early horses of the time period.”

Anemone says success using the old way of finding fossils was often just happenstance.

“So your car breaks down and you get and you know…and you’re wandering around and you see some beautiful fossil. Or you take a wrong turn down a road you’ve never been down before and you see some good looking rocks ahead and you check them out and there’s really good fossils that way. So it’s almost like this legendary part of doing Paleontology, that you just…you go out to these basins where you know the rocks are but you don’t really know where the fossils are and you rely on hard work but also good luck.”

But there may be a better way that Anemone and Geography Professor Jay Emerson have developed. Emerson is responsible for the behind the scenes technical work on developing this new method of finding better dig sites. Basically what they do is they use a Landsat satellite image of the Earth and classify it into what they call “different land cover categories”.

“We’re not actually seeing the fossils themselves in the Landsat imagery rather we’re classifying the image into place that just have sage brush, areas that are forested, or just bare soil that are things we’re not interested in. But what we are interested in finding are areas where there are sandstone outcrops because just beneath these layers of sandstone is this mudstone that tends to have the fossils in it.”

Emerson went along on one trip to Anemone’s work site, in Wyoming’s Great Divide Basin. Emerson hoped to better understand how his maps would be used and what exactly Anemone was looking for. Archeology has used similar satellite mapping to assist them in their finds, but now Paleontology will have its own version of satellite maps to assist them in their search. This collaboration between Geography and Paleontology is new for these fields especially with the depth being experimented with here. Emerson explains how he also saw the serendipitous nature to fossil finding and thinks that Geographical Studies will help out.

“We’re trying to add a little bit more analytical rigor to it, to narrow down and focus efforts rather than doing a generalized search.”

Their idea was inspired by one of their graduate students, who went to Wyoming to assist Emerson and Anemone. This student worked on a project that would be the beginnings of the predictive model for finding fossil locations.

“There’s no way we’re going to find fossils from our computer desktops. But we’re using the computer technology, the technology from geography, remote sensing, GIS, we’re using it to allow us to search in a more smart fashion when we go out to the field and do the hard work of looking for fossils on the ground.”

In recent months Anemone and Emerson have been using this new system to figure out where to dig when they go back to Wyoming this summer.

“The plan is to return to the field during the month of July 2012 and go to some of these regions that this model has picked out, and hopefully we will work long and hard and walk a lot of the areas in these particular places and hopefully we will find some productive localities. That’s certainly the plan.”

After a recent Paleontology conference in Las Vegas many of their fellow colleagues wanted to try this predictive model themselves, even before its official field test.

For more information related to dinosaurs, visit rareresource.com.

Rare fossils explain oceanic evolution


Scientists have found dinosaur fossils dating back to more than 450 million years ago, which they believe can reveal how ocean communities have evolved.

dinosaur fossils


Found in a disused Powys quarry, the fossils are believed to be of a kind never discovered before. They belong to the area which is now the town of Llandrindod Wells, once partially lying under water.

Found by paleontologists Dr. Joe Botting, Dr. Lucy Muir and Talfan Barnie in 2004, the fossils are in variety of sponges and worms to nautiloids, which are similar to a squid with a shell.

“The creatures' images are said to be 460m years old and from the part of geological time known as the Ordovician Period,” said Dr. Muir.

There was once an ocean between Scotland and England/Wales and the area around Llandrindod was part of a chain of volcanic islands during the Ordovician Period, a little bit like Indonesia today, Muir described.

"As the island grew and was eroded, a lot of sediment [sand, silt and mud] was washed into the sea. This sediment buried animal remains quickly, and in some cases buried them alive, so they didn't fall apart or get eaten," he added.

X-rays showed a spectacular hydroid which is entirely new and surprising for researchers because they claim it is entirely enclosed within the rock.

"The new fauna gives us a picture of a fossil community that not only is entirely new, but is also surprising. It resembles to some extent some of the modern communities found in the very deep sea," said Muir.

"It shows us that Ordovician ecosystems were even more diverse and complicated than we imagined,” he added.

The fossils have been sent to the Natural History Museum in London to be preserved.

For more information related to dinosaurs, visit rareresource.com.

Rare fossils explain oceanic evolution

Monday, December 26, 2011



Scientists have found dinosaurs fossils dating back to more than 450 million years ago, which they believe can reveal how ocean communities have evolved.

Found in a disused Powys quarry, the dinosaurs fossils are believed to be of a kind never discovered before. They belong to the area which is now the town of Llandrindod Wells, once partially lying under water.

dinosaurs fossils

Found by paleontologists Dr. Joe Botting, Dr. Lucy Muir and Talfan Barnie in 2004, the fossils are in variety of sponges and worms to nautiloids, which are similar to a squid with a shell.

“The creatures' images are said to be 460m years old and from the part of geological time known as the Ordovician Period,” said Dr. Muir.

There was once an ocean between Scotland and England/Wales and the area around Llandrindod was part of a chain of volcanic islands during the Ordovician Period, a little bit like Indonesia today, Muir described.

"As the island grew and was eroded, a lot of sediment [sand, silt and mud] was washed into the sea. This sediment buried animal remains quickly, and in some cases buried them alive, so they didn't fall apart or get eaten," he added.

X-rays showed a spectacular hydroid which is entirely new and surprising for researchers because they claim it is entirely enclosed within the rock.

"The new fauna gives us a picture of a fossil community that not only is entirely new, but is also surprising. It resembles to some extent some of the modern communities found in the very deep sea,"

For more information related to dinosaurs, visit rareresource.com.

Unknown Sixth Toe Discovered in Elephants

fossils



Buried beneath the leathery skin of an elephant’s foot lies one of anatomy’s unappreciated mysteries. Three hundred years ago, a surgeon claimed elephants had six toes instead of the usual five, setting off a debate about whether an extra digit was really possible. Modern anatomists scoffed at the idea, insisting instead that the extra toe was really just a big lump of cartilage. Now a study of scores of elephant feet shows that the lump really does turn into bone. The digit is not a true toe — it’s more like a panda’s faux thumb. But it nonetheless helps support the pachyderm’s mighty girth.

In elephants, “the unique structure of the foot must clearly be considered a key innovation,” says Matthew Vickaryous, a vertebrate morphologist at the University of Guelph in Canada who was not involved in the study. “The elephant foot is deceptively complex.”

The giant panda’s extra thumb is a famous example of evolution’s inventiveness. The animal’s real thumb looks just the rest of its fingers, and together they form a paw with five claws. But in addition, pandas have a somewhat opposable digit low on the inside edge of the paw that helps them grasp bamboo. This “thumb” is really just a sesamoid, a bit of bone that typically forms inside tendons and ligaments where they cross joints. The kneecap is one example of a sesamoid. But in the panda, the sesamoid on the outside base of the true thumb became enlarged, taking on a digit-like identity that helps the animal eat more efficiently.

John Hutchinson, an evolutionary biomechanist at the Royal Veterinary College in the United Kingdom, wondered if something similar was going on with the elephant’s toe. An expert in elephant locomotion, he had for years collected and preserved elephant feet — flesh and all — from animals that died in zoos. The animals ranged in age from newborns to those in their 50s. He had been performing computed tomography (CT) scans, which use x-rays to image tissues in slices to get 3-D pictures of them, and other studies to understand how the feet worked, when he noticed that the cartilaginous lump often became denser, like bone, as each elephant aged. The lump could be up to 15 centimeters long and 6 centimeters wide, and it really did seem like it could work like a toe, he says. It’s in the same position as the panda’s thumb, but it’s embedded in cushiony tissue called a fat pad.

Though they are not visible, an elephant’s real toes are oriented somewhat vertically, so that the animal is actually walking on tiptoe, with the wrist and heel off the ground. At first glance, the extra toe seems to be too high off the ground to bear weight or do much good. But by putting some of the collected elephant feet in a device that made it seem as if the foot was supporting the elephant’s weight and imaging them with additional CT scans, Hutchinson and his colleagues showed that the faux toe also acts to support weight, as they report online Dec. 22 in Science. “The extra digits do change position and come into contact with the ground,” says Elizabeth Brainerd, a functional morphologist at Brown University who was not involved in the study.

To trace the evolution of the extra toe, Hutchinson and colleagues performed CT scans on feet of tapir-like species representing the earliest elephant-like mammals and on more recent elephant fossils. They found no evidence of the extra toe in 50-million-year-old fossils, which appeared to walk flat-footed, leaving no room for the sixth toe. Those animals likely spent most of their time in the water. But by 40 million years ago, the more recent fossils had telltale signs of this sixth toe. At that time, elephants were getting larger and becoming more land-based. Their feet were changing to better support their weight, with an expansion of the fat pads.

Although extra fingers and toes sometimes arise as genetic anomalies, and are even common in certain cat breeds (a condition known as polydactyly), Hutchinson thinks it was easier for the sesamoid bone to be recruited for extra support than for a true sixth toe to evolve in elephants. Making a sixth toe would have required a revamping of the complex developmental program that leads to the formation of the foot, he explains.

The sesamoid bone came in handy for the elephant, notes Vickaryous. “Gigantic body forms require innovative adaptations to cope with large increases in body mass.” The researchers are investigating whether other very large animals, such as sauropod dinosaurs, had similar innovations.

Many scientists think that the study of anatomy is past its prime. But that’s not true, says Marcelo Sánchez, an evolutionary morphologist at the University of Zurich in Switzerland. “Even animals as ‘well known’ as elephants can be subject of exciting, new discoveries, the study of which provides major insights into evolution.”


For more information related to dinosaurs, visit rareresource.com.

Petrified Forest adds 26,000 acres of private land

Sunday, December 25, 2011



The federal government is gaining control over an even larger expanse of rainbow-colored petrified wood, fossils from the dawning age of dinosaurs and petroglyphs left by American Indian tribes who once lived in eastern Arizona.

The National Park Service secured the first major private ranch within the Petrified Forest National Park boundaries on Thursday, capping off negotiations that began years ago with the help of a conservation group. Scientists say they're eager to explore the more than 26,000 acres that have remained largely untouched and discover even more treasures.

"The opportunity to actually go out into an area that hasn't been worked before by other researchers, the opportunity to find things that are truly new to science — there's a very good chance of that, so it's pretty exciting," said Bill Parker, a paleontologist at the park. "I think we're definitely going to be able to find some things that are new out there that are really going to enhance the story of the park."

Congress expanded the boundaries of the park in 2004 from 93,500 acres to about 218,500 acres but did not immediately appropriate any money to buy the private inholdings. The funding for land purchases came years later through a federal land protection program. The Park Service now has acquired about a third of the 120,000 acres it wants, with the most significant acreage coming from a transfer of U.S. Bureau of Land Management land and Thursday's $8 million purchase of the Paulsell Ranch within the park boundaries.

Mike Ford, the Southwest director for the Conservation Fund, said he began a quest to acquire the land for the Park Service in 1999 at the request of former Interior Secretary Bruce Babbitt. Ford recalled driving around in a pickup with the landowner, Marvin Hatch, surveying the land and trying to strike a deal that the two never quite agreed on. Hatch's family contacted Ford after Hatch died to continue the talks.

Petrified wood is scattered throughout the undeveloped ranch land south of Interstate 40 where cattle haven't grazed for years, but Ford notes "you're not going to see dinosaur bones protruding from the ground."

"I tell people about this part of the world — it's so rough and crude, it has its own beauty," Ford said. "For people who love the Southwest and love those kinds of landscapes, it's isolated, it's remote, it's out there. That crudeness has a beauty that you have to be a desert rat to appreciate."

The Park Service expects to spend a few years doing inventory on the land before it decides how the public can best enjoy it, Parker said. Some 630,000 people visit the park each year.

The ranch is a mix of grasslands that would be ideal for archaeological and wildlife finds, and badlands with fossils from the Triassic period that scientists say dates back 220 million years.

Parker said almost 90 new plant and animal species have been found in the park that was designated a national monument in 1906 and a national park in 1962. One of the most significant discoveries was Revueltosaurus, which is related to the crocodile but first was believed to be a plant-eating dinosaur because of its teeth found in New Mexico. A full skeleton was later uncovered at the petrified forest.

Institutions such as the American Museum of Natural History and the University of Texas at Austin have succeeded in finding plant and animal fossils on the ranch land, said Parker, pointing to its potential. Park archaeologist Bill Reitze said surveys of the new property also have shown promise for archaeological sites like early basket-maker villages and petroglyph sites.

"Acquisition of this land may significantly enhance our knowledge of early peoples of the area," Reitze said.

Ford, who is certain that Hatch would be thrilled to know the land is in Park Service hands, said the Conservation Fund now will work to acquire other sites within the petrified forest. Major parcels of private land are held by less than a handful of owners. The Hatch family didn't immediately respond to a request for comment.

"Certainly we don't see this as the end, but we're in a really different time right now politically, economically and otherwise," Ford said. "We trust and hope Congress continues to support important acquisitions like this."
For more information related to dinosaurs, visit rareresource.com.

Origin of dinosaur bone found in a Sunderland garden leaves experts in the Jurassic dark


A DINOSAUR bone from 115million years ago has been found in a Sunderland pensioner’s back garden.

Thought to be from an Iguanodon, which could grow up to 10m long, it was found by the OAP as he was doing a spot of gardening.



Thinking it may be a bone, he popped it in a carrier bag and took it down to Sunderland Museum and Winter Gardens in case it was of interest.

Little did he realise that he had uncovered a major palaeontological find.

Staff at the museum in Burdon Road were amazed when they realised what the pensioner had brought to them. The remarkable discovery is thought to be the first of its kind in the Sunderland area.

The Iguanodon walked the earth 130 to 115 million years ago, during the Lower Cretaceous period.

Sylvia Humphrey, keeper of geology at Tyne & Wear Archives & Museums, spotted the possibility of it belonging to an extinct species and immediately contacted specialists at the Natural History Museum in London to verify the find.

It is believed the bone originates from the south of the country, but has somehow made it up to Sunderland.

She said: “It’s really quite a puzzle as to how the bone got here. Dinosaur bones are younger than the rocks of this area, as this region is on the Permian strata, which is 250 million years old.

“The rocks of this region are far too old for it to have lain here, so it has been lost or dropped by someone in the past.

“We think, although we can never be sure, that it is a piece of vertebrae from an Iguanodon, and may originate from the Wealden area.”

The dinosaur bone is now going on display in Museum Street in Sunderland Museum & Winter Gardens so visitors can see this bizarre find for themselves.

Jo Cunningham, manager of Sunderland Museums said: “We’re very grateful to our museum visitor for bringing this amazing find in to us; it will always remain a mystery as to how it found it’s way there, and if they hadn’t been digging up their garden it could have lain undiscovered.

“The person who found it wishes to remain anonymous, but has kindly agreed to loan it to Sunderland Museum & Winter Gardens so that the people of the region can enjoy this unusual find.”

Dr Angela Milner from the Palaeontology Department at the Natural History Museum, London, who confirmed that the bone is from the spine, or tail of an Iguanodon-like dinosaur said: “The bone is the solid part - the centrum - of vertebra from the tail of an Iguanodon-like dinosaur. It is not complete enough to identify it more precisely.

“The rocks around Sunderland are much too old to contain dinosaur bones so there are only two explanations as to how it got there - either by glacial transport or a one-time souvenir from the south coast of England where Iguanodon bones are not infrequently found by fossil hunters.”

For more information related to dinosaurs, visit rareresource.com.

Rare dinosaur fossil found in Canada

Thursday, December 22, 2011


An oil company worker has stumbled upon a rare fossil of a plant-eating dinosaur buried in the oil sands of Canada's western province of Alberta.


The 110-million-year-old fossil belongs to an ankylosaur, a dinosaur with powerful limbs, armor plating and a club-like tail, Reuters reported.

The find has been a surprise to many archeologists since the region where it was found was covered by water in ancient times.

"We've never found a dinosaur in this location," said Donald Henderson, a curator at Alberta's Royal Tyrrell Museum. "Because the area was once a sea, most finds are invertebrates such as clams and ammonites."

Experts say the fossil had once been a creature about 5 meters long and 2 meters wide.

"It is pretty amazing that it survived in such good condition," said Henderson, adding that the fossil was not flattened by the heavy rock sediment.

dinosaur fossils

"It is also the earliest complete dinosaur that we have from this province."

Work has been halted at the site when the discovery made and archeologists will have three weeks to remove the fossil and take it to the Royal Tyrrell museum.

The last major dinosaur fossil found in northern Alberta was a giant reptile called an ichthyosaur, which was discovered 10 years ago near Fort McMurray.

For more information related to dinosaurs, visit rareresource.com.

World's Smallest Dinosaur Fossil Found in Guizhou

dinosaur fossils
dinosaur fossils


Photo taken on April 5, 2007 shows two dinosaur fossils found in Xingyi of Guiyang, capital of southwest China's Guizhou Province. The two dinosaurs, respectively 23mm and 25mm in length, are believed to be the smallest dinosaur fossils in the world by now.

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Past of dicynodont found on every place

Wednesday, December 21, 2011

dinosaur fossils


Dinosaurs Fossils found on a Tasmanian seaside have verified the everyday living in Modern australia of the dicynodont – an odd-looking types that resided 30 thousand decades before the old – demonstrating it persisted on all areas.

The dinosaurs fossils were found by a several jogging on a seaside on the Tasman Peninsula.

The plant-eating creatures, about the dimension a cow, resided about 250 thousand decades ago and became vanished about 20 thousand decades ago.

Complete types of the dicynodont have been found in Indian and Southern African-american. The development of the two brain parts found in Tasmania has empowered experts to affirm that the being resided in Modern australia. The only other proof was a traditional found in Qld in 1983.

A paleontologist, Dr Tim Rozefelds, from the Qld Art gallery, said the "strange-looking monster " may have live through more time in Modern australia than on other areas.

"Australia is an region place and maybe some elements like the monotremes, like the platypus and the echidna, live through here while elsewhere on the planet they became extinct"

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Scientists Find Antarctic Traditional Of A Large, Plant-Eating Dinosaur



Remains of a new sample of titanosaur, a number of plant-eating dinosaurs with incredibly extensive neck and tails, have been discovered for initially on what is now Antarctica, and come from some time when the freezing place was hotter and teemed with plants.

Dr. Ignacio Alejandro Cerda, from the Conicet analysis company in Argentina, and fellow workers authored in the In german paper Naturwissenschaften: “Our discovering indicates that innovative titanosaurs obtained a international submission at least by the Overdue Cretaceous.”

The new sample, made up of area of backbone almost 20-centimeters extensive, considered to have come from the center third of the dinosaur’s longest tail. It was discovered on Wayne Ross Region by an Argentinian-led group, who determined the past as that belong to a lithostrotian titanosaur from the Overdue Cretaceous interval of around 70 thousand decades ago.

These titanosaurs were the prevalent number of sauropod dinosaurs until the extinguished of all non-bird dinosaurs at the end of the Cretaceous.

Although they were one of the most wide-spread and effective types of sauropod dinosaurs, their source and distribution are not absolutely comprehended and this development of 1 backbone fossil produced too little details to allow rumours about the dinosaur’s types.

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Latest A nice Nyctosaurus Found

Tuesday, December 20, 2011


I say ‘nice’, but actually this is really good. Nyctosaurus material is rather few and far between and this is certainly one of the better specimens. I’ve mentioned nyctosaurs a couple of times before and even among pterosaurs they are rather strange beasts, not least for having lost digits 1-3. The Carnegie actually has some nice pterosaur material on display (always a good thing) and having overloaded the Musings with various parts of their dinosaur exhibits, it seemed a good time to get back to some (more) of their pterosaur-y goodness.dinosaurs fossils

As you can see this specimen is largely in 3D (unlike much other stuff from these beds) and the skull, while bashed up, is especially nice. Other things like the legs and wrists are rather more informative than you might expect too. One thing worth noting is that this specimen was mentioned specifically by Chris Bennett as very likely *not* having a massive head-crest. It seems not all Nyctosaurus bore the ‘antler’.

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New Camplognathoides fossils found

dinosaur fossils


Bit of a overdue one today! I’m falling.

Anyway, this is the horrible-to-spell Campylognathoides, a basal non-pterodasctyloid pterosaur known from Cheaper Jurassic furniture. This is an especially awesome sample that is on present in the Carnegie (how did you guess) and reveals off elements like the breast bone which is all too unusual for pterosaurs.

One element Campylognathoides does produce to be able to discuss is pterosaur systemtics. Those in the know will know that for about a several years now there have generally been two contending pterosaur phylognies that have essential variations and never seem in order to match in the center (though there have been recommendations that Darwinopterus might just fix this issue).

However, as Lady Uniwn is attached to saying (and quite rightly) for all that individuals focus on the arguments between these phylogenies, there is really quite a lot of essential contract, and the two plants are in a lot of techniques really very congruent. One element that is certainly typical in both is the sister-taxon connection of Campylognathoides with Eudimorphodon and that at least is one element this indicates very much everyone wants on.

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Old seeker sentenced after recognizing taking fossils

Monday, December 19, 2011


Renowned dinosaur seeker Nathan Murphy was sentenced last night to three decades probation after asking accountable to taking past.

U.S. Region Assess Sam Haddon purchased Murphy to spend four several weeks of his probation in a pre-release center and required him to pay $17,325 (£10,395) in restitution.

Murphy was charged of taking 13 dinosaur bone from middle Montana's Nightmare Stream badlands in 2006. He asked for forgiveness accountable in May to robbery of specialists property.

The situation provided a unusual look into the black-market traditional business while wiping out the track record of the 51-year-old, self-taught paleontologist who increased to track record on his development of the best-preserved traditional, known as Leonardo, in 2000.

Murphy was sentenced last month to 60 days in arrest on a individual condition depend including a lost raptor traditional. Govt prosecutors desired him to provide an additional 10 several weeks on the specialists charge.

dinosaur fossils

'Murphy's phrase should send a concept to those that practice for-profit source tracking and individuals with less experience as well,' U.S. Lawyer Bill Mercer authored in the national pre-sentencing professional recommendation.

The specialists desired the $17,325 in restitution for damage done to community areas during Murphy's archaeology excavations.

Murphy desired the more lax phrase of three decades probation plus restitution.

'This situation is a training well acquired,' Murphy's legal professional, Erina Moses, authored in records presented to the court.

Murphy operates a business in Billings that expenses customers $200 (£120) a day to sign up in dinosaur digs.

He was paleontology manager at the Old Field Place in Malta, Mt, for 15 decades before resigning in September 2007 - about the same time condition and federal specialists started analyzing his actions.

Murphy's robbery situation was awaiting when Chief executive Barack Government finalized a law in Goal establishing a charge of up to five decades for taking bone or other past from community land.

The Paleontological Resource Protection Act is the nation's first-ever law to particularly secure past. It came too overdue to apply to Murphy's situation.

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Paleontologist Anthony Martin uses old expertise to make new discoveries

paleontologist


You’ve seen it in old movies: a Indigenous National or a durable frontiersman kneels to analyze monitors on the earth, following the pathway of a have, deer, or two-legged attacker. These days, tracking is a leisure activity, not a requirement, and monitoring expertise are hardly necessary for contemporary everyday living. But Anthony Martin, a paleontologist and person lecturer in ecological research, has a eager eye and an abiding understanding for monitoring creatures. Martin lately created worldwide analysis information for discovering the first meat-eating old monitors in Victoria, Modern australia.


paleontologist research

“I look for all types of pet monitors, across all types of substrates—beach fine sand, stones, mud, wood needles, and actually leaves,” Martin says. “I monitor our cat across the carpeting at house. It pushes him crazy.”

While many paleontologists are looking for fossilized bone, Martin is more considering oblique proof of creatures and vegetation that populated our planet a lot of decades ago. Known as know past, such proof of historic life features monitors, tracks, burrows, nests, even fecal matter.

On his workplace in the Numbers and Science Middle are old bone lately found by scientists in Ak. “I individually do not work with fossilized bone. These are just on loan,” Martin says, selecting up a seventy-million-year-old hadrosaur leg.

He deals the leg for a finger-sized, globular heap of what looks like solidified mud. It’s actually a fossilized a similar drill down, most likely created by halictid bees that were talking about seventy-five thousand decades ago. “This, to me, is much more interesting than bone, because it gives me immediate proof about conduct,” Martin says. “Why were the bugs burrowing into the earth, and why did they select that particular surface to drill down in? What is awesome is that you can use know past to get into the ecosystem of a lot of decades ago.” Martin was part of a group that discovered the first trace- and body-fossil proof of a burrowing old at a website in Mt.

In springtime 2006, Martin used a Winship Prize from Emory Institution to invest some time at Monash Higher education in Victoria, Modern australia, house to the Education of Geosciences and the Monash Science Hub. The guts is focused by Patricia Vickers-Rich, a paleontologist whose community outreach and analysis Martin had long popular.

One day, on a lark, Martin came with Johnson Wealthy, a paleontologist from the Art gallery of Victoria and the man of Vickers-Rich, to the Dinosaur Thinking dig website near the seaside area of Inverloch. The Victoria seacoast represents the joint where Modern australia was once become a member of to Antarctica. Cheaper Cretaceous strata of Victoria have produced a significant amount of old bone since 4 decades ago, developing the best-documented finish old construction on the planet. However, only one old monitor, from a little herbivorous old, had ever been discovered.

Martin instantly started jogging along the ocean, looking carefully at the rubble. “You will not discover anything,” Wealthy cautioned him, allowing him know that many other paleontologists had tried and never discover monitors.

But within a long time of his introduction, Martin recognized what seemed to be the fossilized know of a old toe list. That same day, he discovered a second monitor that was likewise simple. “I have so much practical exposure to old monitors, as well as monitoring contemporary creatures, that I can area imperfect monitors,” Martin says. “I see toe styles. I see pull thoughts. I just see all these things.”

Encouraged by Martin’s discover, staff at the website kept an eye out for more monitors. A season later, in March 2007, Monash basic higher education scholar Tyler Lamb discovered a third track—a finish one displaying all three toes. Martin (who is now an honorary analysis affiliate at Monash), Wealthy, Vickers-Rich, and Lesley Kool, another paleontologist from Monash, released a report on the monitors, after analyzing that they were created by large meat-eating dinosaurs (theropods) during the Cretaceous period. Based on the fourteen-inch time the monitors, the experts estimation that the theropods assessed 4.6 to 4.9 toes at hip size.

Martin describes how a old got into the wet fine sand of a stream floodplain, developing a depressive disorder. Water ran over the depressive disorder and chock-full it with coarser-grained fine sand that had just the right nutrient mix to firm up like definite. Sailing vegetable trash was placed around the tips, making dark-colored remnants that help determine its describe. Modern tides and ocean are sporting away the smoother content encompassing the monitor. “One hundred or so and twelve to fifteen thousand decades later, it’s just now disclosing itself to us,” Martin says.

Can learners become as engaged by historic burrows and pet monitors as they can by real old bones?

“They can if I get carry of them,” Martin says. He educates a first-year workshop known as How to Translate Behaviour You Did Not See, which requires learners on monitoring trips to Lullwater retain. “Tracking increases your community,” he says.



For example, not many people understand that deer walk the Emory university. Martin and his learners have determined deer monitors, along with those of beaver, grey foxes, and stream otters in Lullwater. One of Martin’s preferred Lullwater discovers was the on top of a red fox, along the southern pay of Peachtree Stream. A little bar on the rearfoot and fuzzy shields identify fox styles from those of every day pets.

For more information related to dinosaurs, visit rareresource.com.

Darren Tanke’s Gorgosaurus preparing 32: Getting rid of the location cover 2

Sunday, December 18, 2011



Some parts come off in big messages. A avoid of wood is useful as a fulcrum with the screwdriver(s) to pry up the plaster bandages. After 1.5 periods of pulling and getting, most of the cover was off, diamond was showing and the ilium discovered in the location was also seen again for at first in several generations.

The mind was mentioned again with a red thought pen using the drilled holes. As the cover got thinner, a quite big factor preferred to increase off the mind location. This was too big, so I used a throw divider panel to cut two identical selections through the cover and produced the plaster and burlap in between.

dinosaur fossils

This separated the other cover into two parts and the plaster/burlap protecting the mind location was raised off easily. By doing this, the jacketed mind was seen. The linen and dark-colored plastic-type content linens was unveiled and removed- the latter with a side borders. The mind cover looks odd with white-colored sandstone and darker mud, but the latter was a poultice I complicated and put on the unveiled nasal area to safe it from the jacket- I did not want the cover sent right against the mind.

The poultice of dry mud was eliminated and preparing on the mind started again. The mind is most most definately partial on this element and the cuboid seems more horribly preserved- the cuboid is very splintery. Several of the teeth screen white-colored turning represents (root etchings) designed by modern crops as they aged against the example.

It is thought the real platform leach nutritional value out of the conventional with possible unwanted outcomes on the conventional. The rest of the unveiled diamond was given to dry out and when done, glue was squirted into the smashes, etc to safe it for the long run preparing.

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Rare information about Scarfe’s snout


After per weeks duration of pterosaur content, it’s time for Lady Martill to toss in with this invitee attempt. Lady and Bob Etches have just described a new pterosaur and Lady has been type enough to pen this little attempt on the critter:

dinosaur fossils
dinosaur fossils
dinosaur fossils
dinosaur fossils

Cuspicephalus scarfi from the Overdue Jurassic Kimmeridge Clay-based Development of Dorset is one of those bothersome past. It was clearly a wonderful pet, with extensive, trim lips and excellent pearly whites that would have created it look amazing.

It is without uncertainty a breaking traditional, showing a near ideal right side describe, with only a little bit of the dorsal relax losing. OK, it is sad that the cheaper jaw and relax of skeletal system is losing, but in the UK, this sample is the best element since the second sample of Dimorphodon was found in the Lower Jurassic in the mid 19th century.

But despite its near completeness for a English pterosaur brain, it is not entirely clear where it is supposed to be in the fantastic structure (or schemes), of pterosaur phylogeny. It usually be a pterodactyloid just like Germanodactylus on the foundation its individual NAOF and immediately dorsal boundary, but when in contrast to Darwinopterus, its affinities become less crystal obvious.

Sure, it is certainly not Darwinopterus, but it is certainly not Germanodactylus in the most stringent feeling either. Lady Unwin feels it might lie near to the platform of Dsungaripteroidea, and I am likely to believe the fact, but careful attention that this is centered mainly on the dynamics of its crest… not a excellent requirements given the submission of stretch out fibrous-looking crests in Pterosauria.

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Velociraptors' Killer Claws Helped Them Eat Prey Alive

Friday, December 16, 2011


The giant killer claws of dinosaurs such as Velociraptor might have been employed much as birds of prey use similar talons — as hooks to keep victims from escaping, researchers say.

The discovery could also shed light on the origin of flight in birds, investigators added.

dinosaur fossils


The raptor dinosaurs, made famous by the book and film "Jurassic Park" all possessed unusually large, curved talons on the second toes of each foot, which they held off the ground like folded switchblades. Known more formally as dromaeosaurids, they included the famous Velociraptor and its larger relative Deinonychus, and were closely related to birds.

Past studies had proposed that the sickle claws of these raptors were used to slash at prey or to help climb onto victims. Now research into modern-day birds of prey suggests a new possible killing technique — as hooks to lock onto targets.

The second toe

Scientists noted that modern hawks and eagles possess similar enlarged claws on their second toes — the "digit twos" or "D-2s." These claws "are used as anchors, latching into the prey, preventing their escape," said researcher Denver Fowler, a paleobiologist at the Museum of the Rockies in Bozeman, Mont. "We interpret the sickle claw of dromaeosaurids as having evolved to do the same thing — latching in and holding on." [In Photos: Birds of Prey]

"This strategy is only really needed for prey that are about the same size as the predator — large enough that they might struggle and escape from the feet," Fowler said. "Smaller prey are just squeezed to death, but with large prey all the predator can do is hold on and stop it from escaping, then basically just eat it alive."

"Dromaeosaurs lack any obvious adaptations for dispatching their victims, so just like hawks and eagles, they probably ate their prey alive too," Fowler said.

Other features of the feet of these dinosaurs suggest they followed what Fowler and his colleagues call "Raptor Prey Restraint" — RPR, or "ripper." For instance, the toe proportions of raptors seem more suited for grasping than running, and the metatarsus — which includes the bones between the ankles and the toes — is more adapted for strength than speed.

"Unlike humans, most dinosaurs and birds only walk on their toes, so the metatarsus forms part of the leg itself," Fowler said. "A long metatarsus lets you take bigger strides to run faster, but in dromaeosaurids, the metatarsus is very short."

All in all, Velociraptor and its kin do not seem adapted to simply running after prey.

"When we look at modern birds of prey, a relatively short metatarsus is one feature that gives the bird additional strength in its feet," Fowler said. "Velociraptor and Deinonychus also have a very short, stout metatarsus, suggesting that they had great strength but wouldn't have been very fast runners."

Such behavior intriguingly contrasts with that of their closest known relatives, a very similar group of small carnivorous dinosaurs called troodontids.

"Troodontids and dromaeosaurids started out looking very similar, but over about 60 million years, they evolved in opposite directions, adapting to different niches," said Fowler. "Dromaeosaurids evolved towards stronger, slower feet, suggesting a stealthy ambush predatory strategy, adapted for relatively large prey. By contrast, troodontids evolved a longer metatarsus for speed and a more precise, but weaker grip, suggesting they were swift but probably took relatively smaller prey."

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Is Triceratops One or Three Species?



Triceratops, with its three large horns and great ruffled headdress, seems distinctive enough, but at one time paleontologists had named more than a dozen different species of the rhinoceros-like dinosaur.

These have been condensed into three recognized species in the Triceratops genus, but some researchers believe that number should be lower still: They suggest there is just one Triceratops, of whom the size and shape of its skull and head ornaments changed as it matured.

dinosaur fossils

"It's important to understand how different dinosaurs grew," study researcher John Scannella, of Montana State University, told LiveScience in an email. "We are learning that many of them underwent considerable transformations throughout development, which leaves the potential for many different-looking growth stages that may be misinterpreted as many different-looking species of dinosaur."

The three species in question are: Triceratops, the classic three-horned, clown-ruffled dinosaur; Nedoceratops hatcheri, which the researchers suggest is an intermediate stage, but is only represented by a single fossil; and Torosaurus latus, which seems to be much larger than Triceratops and of which there are about a half dozen good-quality specimens. In the growth-stage scenario, Torosaurus would be the "old man" of the group.

Not everyone fully agrees with the remodeling, particularly Andrew Farke, a researcher from the Raymond M. Alf Museum of Paleontology in California. "I agree with them on many points… It's just the interpretation that I disagree with," he said, referring to the reserachers' conclusion that the different species are just different growth stages of the same species.



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New Dinosaurs Pachycephalosaur head fossil is founded

Thursday, December 15, 2011


And so ends Carnegie marginocephalic week with the last of their pachycephalosaur material. For once though, this is something I really haven’t had before. While long ago I did feature a cast of a Pachycepahlosaurus skull (that looks suspsiciously identical to the various mounted skeletons I’ve show) here at least is something a bit different.

dinosaur head fossils

First off, there’s a skull of Stegoceras (above, and the small one below) which even to my inexpert eye is clearly rather different to that of Pachy. Moreover, the ‘shelf’ at the back of the head – the key character that unites the pachycephalosaurs with the ceratopsians, is clearly visible and more dramatic that the usual fine bosses and spines that are generally available.

The second piece is also a Pachycepahlosaurus skull-cap though in rather less good condition, though I’m not sure if the lack of spikes and so on at the back of the head is due to wear / damage, or a lack of development. I suspect the former, since this was rather larger than the cast on display.

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Carnegie mural pterosaurs


As I noted yesterday, I kept the few pterosaurs apart from the gallery. This was mostly because I simply couldn’t get very good photos of them. High up on the walls it made photography difficult (and while yes, there are balconies, I was then shooting across the entire hallway).

The first two are from the Late Jurassic layout and it’s not entirely clear what they are supposed to be. That’s no criticism of the artists, the Morrison is rather lacking in pterosaur material and to be honest many of the basal pterosaur look really quite similar, though if pushed I’d probably say the upper ones were rhamphorhynchines and the lower scaphoganthines. At the bottom though is something rather more obvious, it’s Quetzalcoatlus and of course this goes alongside the mounted cast that hangs from the ceiling.




While obviously there’s the old running joke about pterosaur just being pictured alongside sauropods for scale, it’s understandable here where the dinosaurs really are the star of the show and for the Morrison especially (and this is essentially a Morrison exhibit) there’s not much and nothing in the Carnegie collections at all, so their use as ‘background’ is fair enough. Well worth showing though!

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Canadian dig yields tiny dinosaur

Wednesday, December 14, 2011



The smallest meat-eating dinosaur yet to be found in North America has been identified from six tiny pelvic bones.

Hesperonychus was the size of a small chicken, and used its rows of serrated teeth to feed on insects, experts say.

The bird-like creature is closely related to Microraptor - a tiny feathered dinosaur discovered in China.

dinosaur fossils

The specimen helps to confirm that reptiles, and not mammals, filled the role of small predators during the age of the dinosaurs.

The fossil skeleton, which lay misidentified for 25 years as a lizard, belongs to a group of dinosaurs called the theropods - bipedal reptiles that eventually gave rise to birds.

"Despite the discovery of exquisitely preserved skeletons of small bird-like dinosaurs in Asia, they are exceedingly rare in North America," explained Dr Philip Currie, a palaeontologist from the University of Alberta and co-author on the paper.

Dr Currie had been pondering why so few small fossils have been unearthed in Alberta, Canada - one of the world's richest sites for large-dinosaur bones.

He suspected that small dinosaurs did not preserve well in the region of the prevalence of larger predators in the area.

"There were many large dinosaurs running around eating them, and small bones are easily washed away by rivers [common in this region during the Cretaceous period]", Dr Currie said.

The new find casts more doubt on whether mammals would have acted as small predators in Cretaceous-era North America. The fossilised pelvis came from an animal that weighed no more than 1.9kg (4.2lb) and appears distinctively reptilian.

"This tells us that [as in Asia], North American dinosaurs likely out-competed mammals for both large and small predator niches," Dr Currie told BBC News.


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New dinosaur gives bird wing clue



A new dinosaur unearthed in western China has shed light on the evolution from dinosaur hands to the wing bones in today's birds.

The dinosaur fossil, from about 160 million years ago, has been named Limusaurus inextricabilis.

dinosaur fossils

The find contributes to a debate over how an ancestral hand with five digits evolved to one with three in birds.

The work, published in Nature, suggests that the middle three digits, rather than the "thumb" and first two, remain.

Theropods - the group of dinosaurs ancestral to modern birds and which include the fearsome Tyrannosaurus rex - are known for having hands and feet with just three digits.

It has been a matter of debate how the three-fingered hand developed from its five-fingered ancestor. Each digit among the five was composed of a specific number of bones, or phalanges.

Palaeontologists have long argued that it is the first (corresponding to the thumb), second, and third fingers from that ancestral hand that survived through to modern birds, on grounds that the three fingers in later animals exhibit the correct number of phalanges.

However, developmental biologists have shown that bird embryos show growth of all five digits, but it is the first and fifth that later stop growing and are reabsorbed.

The remaining three bones fuse and form a vestigial "hand" hidden in the middle of a bird's wing.

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Florida muck factor in Daytona mastodon find

Tuesday, December 13, 2011

dinosaur fossils


Workers recently stumbled upon remains of an Ice Age mastodon on a construction site, experts say Florida has a unique collection of natural conditions that make it one of the best places in the nation to find preserved fossils.



The dark black muck that surrounded the mastodon bones is nothing visually appealing, but it's one of the key pieces of scientific magic that helped preserve the fossilized remains found in a half-built retention pond near the intersection of Mason Avenue and Nova Road.

The muck chokes off any oxygen that would cause decay and entombs whatever is in it, paleontology experts say.

The protective muck, mineral-filled natural springs with constant temperatures, low-lying swampy areas, abundant limestone and naturally occurring phosphate in Florida soils have all preserved pieces of history that would have otherwise vanished tens of thousands of years ago, those experts say.

The many layers of soils, steady warm air temperatures and low-lying coastal areas, where deceased animals can be covered up quickly, also help.

"We've probably all walked over fossils and skeletons and never known it," said James "Zach" Zacharias, an education and history curator at the Museum of Arts & Sciences in Daytona Beach. "This whole area up and down Nova Road must have been teeming with Ice Age mammals."

Some have dubbed parts of Central Florida "Bone Valley" because of the fossils found here.

"In Florida we have a rich fossil layer that runs through the state," said Russell Brown, president of the Orlando-based Florida Fossil Hunters group and an amateur paleontologist.

One of the only reasons animal bones and teeth thousands of years old aren't found more often is because there's usually no good reason to dig 10 to 15 feet down. But when workers creating South Daytona's Reed Canal Park in 1975 started peeling away the layers of earth, they found the full skeleton of a giant ground sloth in muck there.

When workers building the city government retention pond near Mason and Nova were hitting that 10-foot level about a week ago, they stumbled on the mastodon's jaw along with some other bone fragments.

Amateur paleontologists and volunteers from the Museum of Arts & Sciences were allowed to look around the 4-acre retention pond, and they started finding things most every day last week. They've unearthed most of the two tusks, parts of the skull, ribs, vertebrae, teeth, a partial leg bone, a joint of some sort and various bone pieces they haven't identified yet.

The remains have been there for at least 13,000 years, when that type of mastodon went extinct, but the animal could have died as long as 130,000 years ago.

The paleontologists and museum officials say they think they've got an adult male mastodon -- 100,000 years old by their best guess for now -- but they aren't confident they're going to find its full skeleton. They're afraid the retention pond workers might have unwittingly sent some mastodon remains through a rock crusher, not realizing what was in their piles of dirt.

The paleontologists and museum officials have had their kids helping sift through debris piles at the site, but Zacharias said most of those kids have been on sites before and they'd know enough to distinguish between remains and rocks.

They also say it's possible the full skeleton wasn't preserved there. Maybe other animals, ancient rivers or ocean tides carried off pieces.

They plan to make today their last day to search unless construction workers on the site stumble on more remains. At the city's request, a St. Augustine archaeologist is tentatively scheduled to be on site Monday to look for Native American remains and artifacts.

Even if nothing else is found, the paleontologists will still count it as an incredible find.

"It's pretty rare to find the full skeleton," Zacharias said.

There are only about 12 known full mastodon skeletons that have been found in Florida, said Richard Hulbert, vertebrate paleontology collections manager at the Florida Museum of Natural History in Gainesville.

"Mostly we find pieces of mastodons and mammoths in rivers," said Valerie First, a historian for Florida Fossil Hunters.

For more information related to dinosaurs, visit rareresource.com.

Prehistoric Whale "Graveyard" Found in Desert


Scientists preserve a prehistoric adult whale skeleton's rib cage and tail in plaster in Chile's Atacama Desert in 2010.

The fossil is 1 of 20 roughly five-million-year-old whales found in a roadside "graveyard" more than a half a mile (a kilometer) from the Pacific coast, experts announced late last month.



It's unknown why the whales were found together, said the Smithsonian Institution's Nicholas Pyenson, lead paleontologist on the archaeology excavation.

But possible reasons include a storm pushing them abruptly to shore, a red tide—a proliferation of microscopic organisms that release toxins in the water—poisoning them, and the whales beaching themselves in a group, said Pyenson, a grantee of the National Geographic Society's Committee for Research and Exploration. (The Society owns National Geographic News.)

Getting to the bottom of the mystery requires careful preservation and examination, beginning with encasing the dinosaurs fossils in protective plaster "jackets" (as pictured) for the trip to the lab—a skill the team hadn't quite mastered by the time this picture was taken, Pyenson explained.

Above, he said, "you can see the block containing the rib cage and the thinner segments capping the tail."

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Who could eat a T rex? Another one, of course

Wednesday, December 7, 2011


A team of researchers reports that huge tooth marks on Tyrannosaurus rex indicate the ancient giant dinosaurs may have cannibalised one another.

dinosaur fossils

Nicholas R Longrich of Yale University said the marks were the kind that any big carnivore could have made, but “T rex was the only big carnivore in western North America 65 million years ago”.

Longrich and colleagues reported their findings in Friday’s edition of the journal PLoS ONE.

They found 17 fossils with deep V-shaped gouges of a type identified as being made by T rex. Of those, four were remains of T rex themselves.

The researchers said it seems likely the marks were made during scavenging from a dead dinosaur.

They added it is possible that combat led to casualties, with the dead becoming convenient sources of food for the victors.

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Millennia of chaos may have finally brought down the dinosaurs


Millennia of chaos may have finally brought down the dinosaurs

It took not just a stray mete­orite, but a pum­me­ling on a scale barely ima­gin­able to finish off the dino­saurs some 65 mil­lion years ago, re­search­ers are re­port­ing.

The Prince­ton Uni­vers­ity sci­ent­ists tell of a double whammy of co­los­sal vol­can­ic erup­tions and me­te­or­ite strikes whose effects pound­ed the mighty beasts into fin­al sub­mission.

dinosaur fossils

Their new re­search, which port­rays an Earth that was bare­ly hab­it­a­ble for half a mil­lion years, weaves to­ge­ther el­e­ments of two lead­ing the­o­ries on the mass ex­tinc­tion along with new de­tails.

The re­sult is one, epic tale of un­re­len­ting chaos.

One of these previous the­o­ries, which has been the pre­vail­ing one, holds that a single large me­te­or­ite felled the great rep­tiles along with many other crea­tures. The other theo­ry blames erup­tions alone.

A Prince­ton re­search team found that a trail of ti­ny, dead ma­rine or­gan­isms span­ning half a mil­lion years of­fers a time­line link­ing the mass ex­tinc­tion to large-scale erup­tions a pri­me­val vol­can­ic range once three times larg­er than France. The vol­ca­noes, known as the Dec­can traps, rose in west­ern In­dia.

A sec­ond re­search group uncov­ered traces near the Dec­can Traps of a me­te­or­ite that they said may have been one of a se­ries to strike the Earth around the time of the mass ex­tinc­tion. That, they said, could have pulled the plug on the few be­lea­guered sur­viv­ors of thou­sands of years of vol­cano-fueled mis­ery.

The first group re­ported this month in the Jour­nal of the Ge­o­log­i­cal So­ci­e­ty of In­dia that ma­rine sed­i­ments from Dec­can la­va flows show that the pop­ul­ation of a group of spe­cies known as plank­ton­ic fora­mini­fera plunged al­most to ex­tinc­tion in the thou­sands of years lead­ing up to the di­no­saur die-off. The fora­min­i­fera, which leaves ti­ny shells be­hind, are wide­ly used to gauge the fall­out of pre­his­tor­ic ca­tas­tro­phes be­cause they’re very sen­sitive to envi­ron­mental changes, said the re­search­ers, who were led by Prince­ton geo­sci­en­tist Gerta Kel­ler.

The de­struc­tion, they added, oc­curred in tan­dem with the larg­est erup­tion phase of the Dec­can Traps — the sec­ond of three — when the vol­ca­noes pumped the at­mos­phere full of cli­mate-altering car­bon di­ox­ide and sul­fur di­ox­ide. A less se­vere third phase of Dec­can ac­tiv­ity is be­lieved to have kept the Earth near­ly un­in­hab­it­a­ble for the next half a mil­lion years.

The other research group, based in Kel­ler’s lab, found ev­i­dence in In­di­an sed­i­ment of a me­te­or­ite strike from the time of the mass ex­tinc­tion. This and others like it could have purged the already de­vast­ated land­scape of the few, weak­ened spe­cies sur­viv­ing the Dec­can blasts, they said. That study ap­pears in the Oc­to­ber is­sue of the jour­nal Earth and Plan­e­tary Sci­ence Let­ters.

The same sed­i­ment — lo­cat­ed in Me­gha­la­ya, In­dia, more than 600 miles east of the Dec­can Traps — re­veals Earth in this pe­ri­od as a harsh land of ac­id rain and er­rat­ic tem­per­a­tures, the in­vesti­gators claim.

Kel­ler said the find­ings as a whole could put to rest the the­o­ry that the mass-ex­tinc­tion was due to just one large me­te­or­ite im­pact near Chicx­u­lub in pre­s­ent-day Mex­i­co. That im­pact — which oc­curred around the time of the sec­ond-phase Dec­can erup­tions — is thought to have been two mil­lion times more pow­er­ful than a hy­dro­gen bom­b and gen­er­at­ed an enor­mous dust cloud and gas­es that radic­al­ly changed the cli­mate.

Kel­ler has long held that the Chicx­u­lub im­pact was­n’t bad enough to wipe out the scaly ani­mals that had lorded it over the land­scape. But the new work from her lab sug­gests the larg­est Dec­can erup­tions were that bad, or nearly so.

“Our work in Me­gha­la­ya and the Dec­can Traps pro­vides the first one-to-one cor­rel­ation be­tween the mass ex­tinc­tion and Dec­can vol­can­is­m,” said Kel­ler, who is lead au­thor of the Ge­o­log­i­cal So­ci­e­ty pa­per and co-authored the other pa­per with lead au­thor Bri­an Gertsch, now at the Mas­sa­chu­setts In­sti­tute of Tech­nol­o­gy. “But giv­en the en­vi­ron­men­tal in­sta­bil­ity caused by the mas­sive Dec­can erup­tions, an im­pact could easi­ly have killed off the few sur­vi­vor spe­cies at the end of the Cre­ta­ceous” era, which coin­cides with the dino­saurs’ de­mise.

Vin­cent Cour­tillot, a geo­phys­i­cist at Par­is Uni­vers­ity Di­de­rot who was­n’t in­volved in the Prince­ton work, called the find­ings an “im­pres­sive anal­y­sis.” Its sig­nif­i­cance is that it “was con­ducted in im­por­tant sec­tions near the vol­can­ic ac­tion, and not thou­sands of kilo­me­ters [miles] away as had been the case pre­vi­ous­ly,” said Cour­tillot, who led a team that re­ported in the Jour­nal of Geo­phys­i­cal Re­search in 2009 that Dec­can vol­can­ism oc­curred in three phases.

The new find­ings, he added, “pro­vide sup­port for the idea that car­bon and sul­fur di­ox­ide emis­sions were the prin­ci­pal agents of en­vi­ron­men­tal change and stress.”

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