how snakes lost their legs Animals Paleontology 

How Snakes Lost their Legs

By Kate Stone Long ago, snakes lost their legs. Now, a fresh clue as to how and why has been found deep in an ancient snake’s inner ear.  Leglessness is not what makes a snake a snake. As this article explains, it is the flexible, unhinged jaw that distinguishes a snake from a legless lizard. And yet, developing legs only to lose them may seem like evolution in reverse. A 90 million-year-old snake skull is giving researchers vital clues about how snakes lost their legs as they evolved. Comparisons between…

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