3.2" Fossil Mosasaur Quadrate (Jaw Bone) - Kansas

This is a 3.2" quadrate (jaw bone) from a Platecarpus mosasaur. The bone was collected from the Smoky Hill Chalk of west Kansas. A quadrate is a bone located near the pinch point of the jaw. Its function was to provide structural support to the tympanic membrane (ear drum) of reptiles and amphibians. This is a very cool specimen with excellent preservation.

Comes with an acrylic display stand.

An artists reconstruction of Platecarpus.  By Dmitry Bogdanov Creative Commons License
An artists reconstruction of Platecarpus. By Dmitry Bogdanov Creative Commons License


Platecarpus is an extinct aquatic lizard belonging to the mosasaur family. Fossils have been found in the United States as well as a possible specimen in Belgium and Africa. It 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 swum in an eel-like fashion, although a recent study suggests that it swam more like modern sharks.

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.


SOLD
DETAILS
SPECIES
Platecarpus sp.
LOCATION
Western Kansas
FORMATION
Niobrara Formation, Smoky Hill Chalk
SIZE
3.2 x 2.4"
ITEM
#217299
GUARANTEE
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.