'They seemed primed to take over': How the Great Dying doomed the 'beast tooth' and set the stage for the dawn of the dinosaurs

This excerpt from Michael Mann's latest book looks at the Cambrian explosion, the Great Dying and how dinosaurs were able to take over thanks to changes to the climate 250 million years ago.

from Livescience https://ift.tt/7jmOHYG
via IFTTT