Prosalirus bitis is the name given to a fossil proto-frog found in Arizona in 1995, which has primitive features, but has mostly lost the salamander-like traits of its ancestors. It has a skeleton designed to absorb the force of jumping with its hind legs and tail. It is thought to have lived 190 million years ago, well before the first known modern frog, the Sanyanlichan. As of 2009, only three Prosalirus skeletons have been discovered.

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Tags: Бесхвостые, Вымершие амфибии, Юра

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