four-legged snake

4-legged snake ancestor 'dug burrows'

A 113-million-year-old fossil from Brazil is the first four-legged snake that scientists have ever seen.

July 24, 2015
July 24, 2015

4-legged snake ancestor 'dug burrows'

A 113-million-year-old fossil from Brazil is the first four-legged snake that scientists have ever seen.