Thalassomedon hanningtoni Welles 1943 (elasmosaur)

Reptilia - Sauropterygia - Elasmosauridae

Synonym: Alzadasaurus riggsi Welles 1943

Full reference: S. P. Welles. 1943. Elasmosaurid plesiosaurs with description of new material from California and Colorado. Memoirs of the University of California 13:125-254

Belongs to Thalassomedon according to K. Carpenter 1999

See also Welles 1943, Welles 1949 and Welles 1962

Sister taxa: none

Type specimens:

  • Thalassomedon hanningtoni: DMNH 1588, a skeleton. Its type locality is Thalassomedon type, Pritchett (DMNH), which is in a Cenomanian marine shale/claystone in the Graneros Shale Formation of Colorado.
  • Alzadasaurus riggsi: FMNH 12009, a set of postcrania (sixty vertebrae, both scapulae and both coracoids, the left paddle almost entire, the left pubis, and both ischia and ilia). Its type locality is Alzada, which is in a Cenomanian marine horizon in the Belle Fourche Formation of Montana.

Ecology: aquatic carnivore

Distribution: found only at Thalassomedon type, Pritchett (DMNH)

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Specimen images are retrieved through the ePANDDA API.

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