Família do réptil

https://www.theguardian.com/science/2018/may/30/worlds-oldest-lizard-fossil-forces-rethink-of-reptile-family-tree

Citando:
"they probably originated just before the “Great Dying” – a catastrophic mass extinction event 252m years ago when more than 90% of marine creature and 70% of land vertebrates died. That, Bernardi said, overturns current theories that they arose after the disaster, and reveals that many different species appeared in the wake of the catastrophe due to factors such as a lack of competitors. “It is like the other side of extinctions,” he said. “Squamates, for example, were actually there before the extinction, they went through [it] in some way, and they took the opportunities that opened up just after the extinction,” he said."