6.1" Fossil Xiphactinus Skull Bone With Vertebrae - Kansas

This is an interesting fossil Xiphactinus audax skull bone with vertebrae, collected from the Niobrara Formation (Smoky Hill Chalk Member) of Gove County, Kansas. The vertebrae are still naturally associated with the portion of skull that they would have articulated with. The entire specimen measures 6.1" wide, with the vertebrae averaging 1.3" wide each.

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 - Smoky Hill Chalk
Entire Specimen: 6.1 x 5". Vertebrae: 1.3" wide each
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