Amargasaurus was a relatively small dinosaur compared to other sauropods

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

but it is believed that they had an appearance similar to that of modern dolphins or killer whales

it possessed a horny beak for cutting vegetation and efficient dental batteries for grinding tough plants

Onchopristis numidus Variant:Hand painted Amargasaurus was a relatively smallOnchopristis 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