Dossier
Najash rionegrina
Coverage of Najash rionegrina in the Nexus archive.
- This 100 million-year-old snake had hind legs and a lost bone that changes evolution
A 100-million-year-old fossil of Najash rionegrina from Argentina reveals that early snakes had hind legs and a cheekbone absent in modern species, challenging previous assumptions about their evolution. The discovery suggests these ancient snakes were large predators, not small burrowers.