Mesohippus bairdi, authentic horse skull Dilophosaurus This plant-eater was about 11

This plant-eater was about 11 feet (3

Carnotaurus Skull

Their lineage traces back to the Cambrian

crocodiles and alligator garfish

Apatosaurus has been found in the late Jurassic rocks of Utah

Mesohippus bairdi, authentic horse skull Dilophosaurus This plant-eater was about 11RARE AND INCREDIBLE FOSSIL HORSE SKULL Mesohippus bairdi Early Oligocene Brule Formation White River Badlands South Dakota Mesohippus (literally "middle horse") was a common early horse in North America which lived some 30 to 40 million years ago. It had longer legs that its predecessor Eohippus and had lost a toe becoming a three toed horse (odd toed ungulate). Its teeth were low crowned unlike earlier horses and contained a single gap behind the