Fossil gets a leg up on snake family tree | Science News


Support Science Journalism

Science News is a nonprofit.

Support us by subscribing now.


Fossil gets a leg up on snake family tree

4:01pm, September 27, 2002

A newly described fossil snake with legs may have climbed higher into the snake family tree than previously thought.

The 95-million-year-old fossil snake, dubbed Haasiophis terrasanctus, is a relative of another legged fossil snake—Pachyrhachis problematicus—that some scientists think may be the earliest link between snakes and extinct marine lizards, like mosasaurs (SN: 4/19/97, p. 238).

However, the new fossil suggests that the two-limbed snakes are advanced big-mouthed snakes, like pythons and boas, rather than primitive serpentine ancestors, says paleontologist Olivier Rieppel of the Field Museum of Natural History in Chicago.

Rieppel and his colleagues compared the fossils' skulls with skulls from other snakes, living and extinct. T

This article is only available to Science News subscribers. Already a subscriber? Log in now.
Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content