
clades


New Paper Has Bad News for Popular “Oxygen Theory” of the Cambrian Explosion

Goodbye to a Basic Clade That Has Been with Us Since 1908?

Fossil Friday: Saber-Toothed Tigers Originated Multiple Times

Fossil Friday: The Giant Armadillo Glyptodon and the Abrupt Origin of Xenarthrans

Birds and Bats: How Bright Is Evolutionary Light?







































