Platecarpus ictericus, mosasaur skull, marine reptile Tyrannosaurus Rex Anatomy: Megatherium had peg-like teeth

Anatomy: Megatherium had peg-like teeth

The type species is D

Location: Brazil Formation: Santana

casts of large footprints

The genus is known from the Hell Creek Formation of Montana and the Lance Formation of Wyoming

Platecarpus ictericus, mosasaur skull, marine reptile Tyrannosaurus Rex Anatomy: Megatherium had peg-like teethMosasaurs 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