A brief history of dinosaurs - Live Science The history of dinosaurs encompasses a long time period of diverse creatures This piece of art is a reconstruction of a late Maastrichtian (~66 million years ago) paleoenvironment in North
Dinosaurs werent going extinct before the asteroid strike The dinosaurs were not in decline before the asteroid hit, a new study finds Instead, poor fossilization conditions and unexposed late Cretaceous rock layers mean they're either not preserved or