Alligator-Sized Triassic Amphibians Died in Wyoming Mass Extinction, Mysterious 'Bone Bed' Reveals

Scientists have discovered a 230-million-year-old Buettnererpeton bakeri skull in Wyoming. (Photo credit: Dave Lovelace, CC-BY 4.0) About 230 million years ago, in an ancient floodplain in what is now Wyoming, at least 19 alligator-sized amphibians died simultaneously. The fossils, found…