Platecarpus ictericus, mosasaur skull, marine reptile Tyrannosaurus Rex Family Rhinocerotidae

Family Rhinocerotidae

] The most distinctive feature is their large skull

though Professor William Gillespie

casts of large footprints

Eldonia is a great example of a problematic fossil organism

Platecarpus ictericus, mosasaur skull, marine reptile Tyrannosaurus Rex Family RhinocerotidaeMosasaurs 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