'They seemed primed to take over': How the Great Dying doomed the 'beast tooth' and set the stage for the dawn of the dinosaurs | An excerpt from #OurFragileMoment courtesy of @ea48bc11 https://www.livescience.com/animals/extinct-species/they-seemed-primed-to-take-over-how-the-great-dying-doomed-the-beast-tooth-and-set-the-stage-for-the-dawn-of-the-dinosaurs