jan 1, 2001 - Astraligi
Description:
First published evidence that some of the most archaic cetaceans—the Eocene archaeocetes Ichthyolestes, Pakicetus, Artiocetus, and Rodhocetus—had astragali exactly matching those of artiodactyls, but not mesonychians.Added to timeline:
Date:
jan 1, 2001
Now
~ 25 years ago