Eryops megacephalus
Early Permian
Arroyo Formation
Haskell county
Texas, USA.

Eryops was a massive amphibian related to the ancestors of modern amphibians, with a heavily built skull and strong jaws filled with sharp teeth. Fossils from the Texas Permian red beds provide important insight into the diverse terrestrial ecosystems that existed long before the age of dinosaurs.
16mm tooth