In Depth Gunakadeit is a genus of thalattosaur that lived in waters around what is now North America during the late Triassic. Gunakadeit is a thalattosaur genus of contrasts. In one respect Gunakadeit appear to have been quite primitive in form when compared to other thalattosaurs. In another, Gunakadeit lived towards the end of the … Read more
In Depth Like all other thalattosaurs, Concavispina was a quadrupedal marine reptile that lived on coastlines and hunted in the ocean for its food. Propulsion in the water was provided by undulating its laterally compressed tail in a side to side motion rather than relying upon paddling with the limbs. Concavispina is noted for having … Read more
In Depth Xinpusaurus is one of the better known thalattosaurs, and like others it had a laterally compressed tail that was suited to providing underwater locomotion as it hunted for prey like fish. Thalattosaurs still possessed four limbs though, not only betraying their terrestrial ancestry, but also indicating that they probably returned to the shore … Read more