Tooth buried in bone shows two prehistoric predators tangled across land, sea boundaries
Monday, September 29, 2014 - 05:00
in Paleontology & Archaeology
(Phys.org) —About 210 million years ago when the supercontinent of Pangea was starting to break up and dog-sized dinosaurs were hiding from nearly everything, entirely different kinds of reptiles called phytosaurs and rauisuchids were at the top of the food chain.