Why was it the mammals who triumphed? An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals.

Pterodactyls are flying reptiles that lived at the same time as the dinosaurs ... Some animals around today are not ...

In addition to its particularly beautiful scenery, Dinosaur Provincial Park – located at the heart of the province of Alberta's badlands – contains some of the most important fossil discoveries ever ...

(via PBS Eons) An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals. But why was it the mammals who ...