Snakes evolved from burrowing ancestor, new data suggest
Serpents did not descend from marine reptiles
![Ptyas mucosa fossil](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/11/112515_mr_snake-fossil_free.jpg?fit=860%2C460&ssl=1)
SEE-THROUGH SKULL X-ray scans of the skulls of lizards and snakes, including Ptyas mucosa, the oriental rat snake, reveal clues that today’s snakes descended from burrowers.
H. Yi