This Specimen has been sold.
12" Plate of Xiphactinus (Cretaceous Fish) Vertebra & Ribs
This is a really cool fossil from the Smoky Hill Chalk in Gove County, Kansas. It's a plate of associated but disarticulated vertebrae and ribs from the monstrous fish, Xiphactinus audax. There are 15 verts present along with several partial ribs and bone fragments. The soft chalk has been nicely prepared to display the fossils in a very aesthetic manner. Comes with a display stand.
Xiphactinus was a huge, predatory fish that lived during the Late Cretaceous. It would have been a veracious 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 as well as being labelled a "Prehistoric Terror" in 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.