Paleontologists at the University of Toronto Mississauga have found dozens of tooth marks on the fossilized bones of three juveniles of Diadectes, one of the earliest large plant-eating vertebrates to walk on land. The scars offer what the researchers say is the oldest direct evidence of predator-prey interactions between terrestrial carnivores and herbivores. Skeletal reconstruction of Diadectes sideropelicus with overlaid left and right tooth and...
