| Named By: | White in 1939 |
| Time Period: | Early Permian, |
| Location: | USA, Texas, Utah. Germany |
| Size: | 60 centimetres long |
| Diet: | Carnivore |
| Fossil(s): | Numerous well preserved specimens, including two laying side by side |
| Classification: | | Chordata | Tetrapoda | Amphibia | Labyrinthodontia | Reptiliomorpha | Seymouriamorpha | Seymouriidae | |
Seymouria was a reptile-like tetrapod from the early Permian of North America and Europe (approximately 280 to 270 million years ago). It was small, only 2 ft (60 cm) long. Seymouria was well adapted to life on land, with many reptilian features--so many, in fact, that it was first thought to be a primitive reptile.