Platycarpus ictericus, mosasaur skull Pachycephalosaurus This plate shows three Traumatocrinus

This plate shows three Traumatocrinus hsuixi from the Triassic

Rogers and Monetta in 1993)

The long jaws were distinctly crocodilian and had 96 teeth

000�36

skull with base 11

Platycarpus ictericus, mosasaur skull Pachycephalosaurus This plate shows three TraumatocrinusMosasaurs were a group of predatory marine reptiles that were very successful during the Late Cretaceous Period. The first mosasaur fossils were found in the 1770's in a mine in the Netherlands, more than 50 years before the first dinosaur bones were found. Mosasaurs were among the first fossils recognized and scientifically described. "Mosasaur" means "reptile of the Meuse," a river near the quarry where mosasaurs were first found. Mosasaurs were