This bizarre cat-sized reptile challenges our understanding of how four-legged animals evolved



What do we have in common with a T-Rex, an elephant and a pet dog?
This is not the start of an unusual joke - the answer is our forearms.
Up until now, all four-legged animals were thought to have forearms made up of two, elongated and parallel bones
But now a strange reptile that lived 212 million years ago is making scientists reconsider the evolution of four-footed creatures.
THE UNUSUAL FOREARMS  Four-limbed animals with a backbone are called tetrapods.
In nearly all tetrapods, the forearm is made up of two, elongated and parallel bones, that connect to a series of much shorter, wrist... read more

 
30 September 2016 in Science &Technology, Views: 38
Source: Daily Mail
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