lunedì 23 dicembre 2013

NYT Science: The Old Snake-and-Egg Question

The Old Snake-and-Egg Question
By SINDYA N. BHANOO

Contrary to a long-held belief, researchers have found that about 175 million years ago, the ancestors of snakes and lizards gave birth to live young instead of laying eggs.

Published: December 24, 2013 at 5:00AM

via NYT Science http://nyti.ms/1kAO4yX