the Feathered Dinosaurs Fossil

Wednesday, July 21, 2010

Chinese Dragon Bird first bird in the world fly from chaoyang city of china. Chaoyang is a treasure-house full of ancient living beings fossils. All kinds of fossils discovered within the boundaries of this city recently aroused the wide attention at home and abroad.

Liaoning opens Chaoyang a window on the late Mesozoic that is more complete and more in depth than anywhere else on Earth, At Liaoning the fine particles of ash and mud that covered animals preserved soft body parts and prevented decomposition by sealing off oxygen.

Repeated volcanic eruptions created a layer cake of dinosaurs fossil beds spanning millions of years. So far, more than 60 species of plants, nearly 90 species of vertebrates, and about 300 species of invertebrates have been identified.

Paleont ologists marveled at dinosaur fossils with stomach contents identifiable as the bones of lizards and mammals, and at bird fossils containing plant seeds. Liaoning Chaoyang is situated within a vast region whose primeval flora and fauna are referred to as the Jehol biota. The area was characterized by a warm climate and numerous lakes.

These conditions provided a fruitful environment for plants and animals to differentiate and flourish. So many individual fossils have been found that scientists are able to study population dynamics, succession within communities of interacting species, and even predator-prey relationships.

"The site preserved not just bones but often whole skeletons," says paleontologist Hans-Dieter Sues of the Smithsonian Institution,and some birds were preserved so well you can distinguish between male and female. Liaoning Chaoyang is unique."
During the 1990s Liaoning jumped from the pages of scholarly journals onto front pages everywhere through a series of spectacular discoveries of archaic birds and—more intriguingly—dinosaurs with feathers.

These fossils bolstered the once controversial but now widely endorsed theory that modern-day birds descended from dinosaurs. They also provide much new evidence in the ongoing debate about how flight originated.

Fossils are being uncovered faster than paleontologists can describe the specimens and spread the new knowledge through scientific papers.


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