PLEISTOCENE Dire wolf Giant Sloth Mastodon Packrat PLIOCENE Gray whale Sea cow Walrus MIOCENE Allodesmus Megalodon shark OLIGOCENE Mesocyon Sespia Tortoise EOCENE Brontothere Palm Tapocyon K-T Rock CRETACEOUS Ammonite Ankylosaur Lambeosaurus
Fossil Field Guide A-Z
