Eryops megacephalus, skull, Permian Argentinosaurus Except for the extinct subspecies

Except for the extinct subspecies of modern polar bear Ursus maritimus tyrannus and Arctotherium

The deposition depth at the center of Fossil Lake is about 200-260 feet thick

of the Egg Mountain brooding colony of a much larger relative

The idea of Clovis foreshafts is commonly repeated in the technical literature despite the paucity of archaeological evidence

000 years ago

Eryops megacephalus, skull, Permian Argentinosaurus Except for the extinct subspeciesEryops (pronounced EAR ee ops) (meaning "long eye" or "drawn out eye" in Greek) was a common, primitive labyrinthodontid amphibian that lived in Permian period swamps. This meat eater had a stout body with very wide ribs, a strong spine, four short, strong legs, a short tail, and a wide, elongated skull with many sharp teeth. Its teeth had enamel with a folded pattern. Eryops was about 5 feet long, one of the largest land animals of its time. Eryops