About 200 million year old fossil of reptile could change history and find out how they actually four-legged animals conquered the world.
Scientists have discovered fossils Drepanosaurus, special for its huge claws on the front legs. Which is pulled out from the bark beetles, such as today’s anteater in South America. They find that this discovery changes what they know so far about the evolution of reptiles, a study published in the journal Current Biology, the BBC reported.
The fossil was discovered in the US state of New Mexico and according to the conclusions of the first animal was the size of a cat and lived in trees. His head looked like a bird, a body chameleon. But the most interesting were his front legs, said Dr. Adam Pritchard at Yale University who led the research.
‘Drepanosaurus had a very large front legs, very strong and muscular. Forefinger with a huge claw was him much longer than the other fingers, and that he was probably the largest bone in the body, “said Pritchard.
The forelimbs with four-served, and serve, indeed sorts of things – from walking and digging up flying and swimming. However, the primary function of the forelimbs remained almost unchanged for 375 million years of evolution. ‘Hands quadrupeds almost invariably follow some rules, “says Pritchard.
It is different from the others
A team of scientists makes a 3D reconstruction of the reptile: “On our forearms on forearm Tyrannosaurus rex or the elephant we have two parallel bones – the radius (radius bone) and ulna (ulna). Drepanosaurus they had and therefore destroys all known forms. On the one hand pushes the limits of what we know about the development and evolution of the limbs of quadrupeds. And on the other hand proof is the lifestyle of an animal that is obviously quite independently adapt to the environment, as do today such as porcupines. ‘
Palaeontologist Dr. Nicholas Fraser of the National Museum of Scotland, said the Triassic period in the Mesozoic Era was the age of ‘interweaving experiments in nature’. ‘This is another animal that is at all unconventional, thanks to the bones that allowed her digging huge claws, “said Fraser.
Drepanosaurus extinct at the end of the Triassic and not developed in any of today’s famous animal. “It was useful only in this particular case – when it came to digging. But this is the first case of the disappearance of species that differs from a known form, “added paleontologist.