Archaeopteryx And The Family Tree Of Dinosaurs, Birds

Sunday, October 2, 2011

Gazza Archaeopteryx was a bird size and characteristics of dinosaurs, and helped to demonstrate that birds evolved dinosaurs. However, a recent study in the journal Nature questions about his position as a dinosaur-bird family tree.

Scientists know that birds evolved from dinosaurs because fossils have been found many of the ancient animals with characteristics of both birds and dinosaurs, like the famous Archaeopteryx, which lived 147 million years ago.

Archaeopteryx had feathers and wings, a tail feather trim flight, just like birds of today. But he also had a long tail bone, teeth, nails and 3 fingers up, like the dinosaurs.

The fossil skeleton was first discovered in 1861 in Solnhofen Archaeopteryx, Germany, and is being treated at the Museum of Natural History. Providing the first evidence that helped show that modern birds descended from small carnivorous dinosaurs.

Together with researchers from around the world, researchers have explored the museum because the individual, and were able to reveal that he was feeling at odds with the emu and the chicken brain.

Even a bird?

No other fossil bird-like creatures are older than Archaeopteryx was known at the time or most of the time since the early discovery. Thus, it was established as the first known bird. But is it still so?

Since the discovery of Archaeopteryx, fossil dinosaurs and many more birds showed combined features, especially in the last 10 years (with only 9 other Archaeopteryx discoveries over the last 150 years).

In June, scientists have found a new species from China, which they say shows that Archaeopteryx was not a bird at all.

Xing Xu of the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, and colleagues identified chicken feathers and size Xiaotingia Zheng. It was very similar to Archaeopteryx, sharing features such as long legs and strong, which explains the team, puts them together in the group of dinosaurs rather than birds.

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