A 100-million-year-old fossil of Najash rionegrina discovered in Argentina reveals that early snakes had hind legs and a lost cheekbone, fundamentally changing our understanding of snake evolution.
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This 100 million-year-old snake had hind legs and a lost bone that changes evolution
Nearly 100 Million Years years Fossil age
Argentina Location
Cheekbone (Nearly Vanished) Key feature lost
100 Million Years fossil age
Najash Rionegrina species studied