Styxosaurus browni Welles 1952 (elasmosaur)

Reptilia - Sauropterygia - Elasmosauridae

Belongs to Styxosaurus according to R. A. Otero 2016

See also Carpenter 1999, Storrs 1999 and Welles 1962

Sister taxa: Hydralmosaurus serpentinus, Styxosaurus snowii, Thalassonomosaurus marshii

Type specimen: AMNH 5835, a partial skeleton (a laterally crushed skull, 75 vertebrae, ribs, the fragmented pectrum, one front limb, and numerous quartzite gastroliths of various sizes). Its type locality is Mule Creek, 15 miles west of Edgemont, which is in a Campanian marine shale in the Pierre Shale Formation of Wyoming.

Ecology: aquatic carnivore

Distribution:

• Cretaceous of United States (2: South Dakota, Wyoming collections)

Total: 2 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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