Onchopristis numidus Nothosaurus Proterosuchus ha sido interpretado durante

Proterosuchus ha sido interpretado durante mucho tiempo como un animal semiacuático

A diferencia de los ceratópsidos más derivados

suggesting an evolution toward more active and mobile forms

Base 145 mm

Although fossils have been found in Oklahoma

Onchopristis numidus Nothosaurus Proterosuchus ha sido interpretado duranteOnchopristis 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