Pregnant reptile fossil suggests bird ancestors gave birth to live young
From ABC Science, 15 February 2017: The discovery of a fossil of a pregnant marine reptile has provided the first evidence that an ancestor of modern-day birds and crocodiles gave birth to live young. The fossil of the long-necked Dinocephalosaurus, which swam the seas during the Middle Triassic period around 245 million years ago, was … Continue reading Pregnant reptile fossil suggests bird ancestors gave birth to live young