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3.6" Cretaceous Marine Reptile Humerus Bone - Kansas
This is a 3.6" fossil humerus of a marine reptile of some kind. Based on the structure, it could possibly belong to one of the many turtle species that called the Western Interior Seaway their home, however it could also have belonged to a basal Halisaurine Mosasaur, such as Eonatator, which also lived in the region.
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.
SPECIES
Unidentified Reptile (Possibly Eonatator?)
LOCATION
Western Kansas
FORMATION
Niobrara Formation
SIZE
3.6" long
CATEGORY
SUB CATEGORY
ITEM
#221367
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