Opisthotriton is an extinct genus of amphibian that lived from the Late Cretaceous to the Early Eocene in North America. Opisthotriton was a small-sized salamander whose habitat was freshwater environments. It could easily be a cave-dwelling animal, like its possible closest living relatives, the proteids. It's diet was probably composed of worms, crustaceans and other aquatic invertebrates.
In Saurian[]
Opisthotriton was revealed in the Saurian's artbook. Only artwork from this amphibian exists and it's existence in the physical game is left unknown. Given it's small size and lack of relevance for a dinosaur-centered game, Opisthotriton will probably be absent in Saurian.