Thalassotitan was one of the largest mosasaurs

strong hind legs that allowed it to move agilely on two limbs

Isisaurus is believed to have fed on plants

Bite marks have been found on fossil bones that match the dental features of Archaeotherium

Amargasaurus was a relatively small dinosaur compared to other sauropods

Onchopristis numidus Variant:Hand painted Thalassotitan was one of theOnchopristis numidus was a cartilaginous fish that lived during the Cretaceous Period , about 100 million years ago, in the rivers and deltas that today correspond to North Africa and other regions of the ancient supercontinent Gondwana. At first glance, it would have resembled today's sawfish , with an elongated body and a "saw" shaped snout that made it unmistakable. That snout, technically called a rostrum , was covered in a row of large, needle