Platycarpus ictericus, mosasaur skull Pachycephalosaurus These dinosaur egg shells come

These dinosaur egg shells come from South America and probably are from a medium size titanosaur sauropod that lived during the late Cretaceous

it's the tail spikes that got all the action

scientists thought that it was more than twice its actual size

The long jaws were distinctly crocodilian and had 96 teeth

skull with base 11

Platycarpus ictericus, mosasaur skull Pachycephalosaurus These dinosaur egg shells comeMosasaurs 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