Seymouria was small, about two feet long, with many razor-sharp teeth in its triangular head as well as legs that were both longer and stronger than the first amphibians - meaning that it could live in water and on land. In fact, some scientists can't agree whether Seymouria was a land-loving reptile or a water-addict of the amphibian class. The consensus seems to be that this species marks the evolutionary transition between the two.
This scientific conundrum is found almost exclusively in the Red Beds of Texas - yet another reason to keep digging for more evidence.
Multiple Seymouria are often found curled up together, meaning that they might have been burrowers. The team has found Seymouria vertebrae and leg bone fossils at the main site, and an almost complete backbone from one individual at another site, that looks so strong "You could probably stand on it," according to Dr. Bakker.