2.75" Xiphactinus Pre-Maxillary Bone - Terror Of The Cretaceous Seas!

This is a pre-maxillary bone from the "Terror fish of the Cretaceous seas", Xiphactinus audax. It was collected from the Late Cretaceous, Smoky Hill Chalk Member of the Niobrara Formation in Kansas. The pre-maxillary section of the jaw sits front and center on the upper jaw and contains three or more massive teeth. It is a really cool piece of the jaw that isn't often highlighted.

It comes with an acrylic display stand.

Xiphactinus was a huge predatory fish that lived during the Late Cretaceous. It would have been a voracious predator, growing 15-20 feet long. When alive, the fish would have resembled a gargantuan fanged tarpon. It appeared in the BBC's Sea Monsters and National Geographic's Sea Monsters: A Prehistoric Adventure, and was labelled a "Prehistoric Terror" in the Animal Planet show River Monsters.

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.
Xiphactinus audax
Gove County, Kansas
Niobrara Formation
2.75" long
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