Other Mammals, Not Dinosaurs, Kept Our Ancestors Down
From the Smithsonian: Other Mammals, Not Dinosaurs, Kept Our Ancestors Down The asteroid impact that ended the Cretaceous gave our mammalian ancestors, the therians, an edge over their mammalian competitors The ancient mammal Gobioconodon (right) squabbles with a therian mammal over a meal in the Late Cretaceous. (Corbin Rainbolt) By Riley Black smithsonianmag.com July 13, 2021 Dinosaurs so thoroughly dominated the ancient world that they suppressed the e