4.2" Fossil Fish (Ichthyodectes) Jaw Section - Kansas

This is a 4.2" long, fossil jaw section with teeth, of Ichthyodectes, from the Smoky Hill Chalk, Gove County, Kansas. It is in good condition and contains eighteen teeth. It is the left dentary (lower jaw) bone and includes the teeth toward the front of the jaw. The bone appears to have been cut during the preparation process. Some of the stone in which the jaw was found is still attached.

Comes with an acrylic display stand.

Ichthyodectes was a bony fish of the order Ichthyodectiformes, which in addition to Ichthyodectes includes the giant, Xiphactinus and smaller Gillicus. Large ichthyodectes grew to more than 10 feet long and were a one of the principle predators of the Western Interior Seaway during the late Cretaceous Period.

Ichthyodectes anaides, Smithsonian National Museum of Natural History.
Ichthyodectes anaides, Smithsonian National Museum of Natural History.

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.
Ichthyodectes sp.
Gove County, Kansas
Niobrara Formation
4.2" long
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