4.05" Fossil Mosasaur (Platecarpus) Parietal/Frontal Bone - Kansas

Fossil Mosasaur (Platecarpus) Parietal/Frontal Bone - Kansas #187463

This is a 4.05" wide, parietal, and frontal bone of a Mosasaur (Platecarpus sp.) from the Late Cretaceous, Smoky Hill Chalk, Gove County, Kansas. Platecarpus is an extinct aquatic lizard belonging to the mosasaur family. This bone was situated at the back of a juvenile mosasaur's skull, near where the spine connects to the head. The parietal foramen is present and hollowed through. This specimen contains a portion of the frontal bone and the sutures where the two plates fused together are very visible.

Mosasaur fossils have been found in the United States as well as possible specimens in Belgium and Africa. They reached lengths of up to 14 feet long, half of that length being its tail. Platecarpus probably fed on fish, squid and ammonites. Like other mosasaurs, it was initially thought to have swam in an eel-like fashion, although a recent study suggests that it swam more like modern sharks.

This specimen comes with a display stand for aesthetic display.

The Smoky Hill Chalk Member of the Niobrara Chalk formation is a Cretaceous conservation Lagerstätte, or fossil-rich geological formation, known primarily for its exceptionally well-preserved marine reptiles. It outcrops in parts of northwest Kansas--its most famous localities for fossils--and in southeastern Nebraska. Large, well-known fossils excavated from the Smoky Hill Chalk include marine reptiles such as plesiosaurs, large bony fish such as Xiphactinus, mosasaurs, pterosaurs, and turtles.

More About Mosasaurus & Mosasaurs