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Pterosaur from 60 million years ago had earliest-known opposed THUMB Ian Randall For Mailonline © Provided by Daily Mail MailOnline logo The earliest-known example of an opposed thumb has been discovered on a new species of tree-dwelling flying reptile that lived in China 160 million years ago.  Dubbed Monkeydactyl , the small Jurassic pterosaur   which had a 2.8 foot (85 cm) wingspan was uncovered from the Tiaojishan rock formations of Liaoning, China. The opposed thumb, known to scientists as a pollex , can be found in mammals and some tree frogs but, with the exception of the chameleon, is rare among reptiles.  The new find reveals that the so-called Darwinopteran pterosaurs like Monkeydactyl also evolved opposed thumbs, a structure never before seen in flying reptiles. 

Sao bernardoCharles darwinXuanyu zhouWaisum maChina university of geosciencesUniversity of birminghamDaily mail mailonlineDaily mail theChina universityFederal universityDaily mail dubbedChina readஸ்ம் பெர்னார்டோசார்லஸ் டார்வின்சீனா பல்கலைக்கழகம் ஆஃப் புவி அறிவியல்பல்கலைக்கழகம் ஆஃப் பர்மிங்காம்