World Topics

Mammals thrived long before the dinosaurs died: teeth study

Jun 9, 2016

Mammals thrived long before the dinosaurs died: teeth study

The prevailing theory that mammals only flourished after an asteroid strike wiped out the dinosaurs 66 million years ago is doubly wrong, according to a study published Wednesday. Our warm-blooded predecessors thrived and spread over millions of years even as Tyrannosaurus and other flesh-ripping ...