Snakes’ earliest ancestors liked to hug it out.
Scientists announced this week the discovery of a 113-million-year-old four-legged reptile fossil found in Brazil. That makes it the most primitive ancestor of modern-day snakes ever found. While scientists have previously identified ancient snake fossils rocking a pair of hind limbs, this is also the first four-legged snake scientists have ever seen.
And the way this snake used its delicate arms helps clarify a longstanding debate about