UW News

David Grossnickle


June 20, 2019

Mammals and their relatives thrived, diversified during so-called ‘Age of Dinosaurs,’ researchers show

Illustration of an extinct marsupial.

Old myths state that, during the time of the dinosaurs, mammals and their relatives were small and primitive. But new research shows that, during the time of the dinosaurs, mammals and their relatives actually underwent two large ecological radiations, diversifying into climbing, gliding and burrowing forms with a variety of diets.