Taxonomic history of the genus Styxosaurus (original) (raw)

	Mikko's Phylogeny Archive Front page Taxonomic history of the genus Styxosaurus Welles, 1943

After O'Keefe, 2001

†_Styxosaurus_ Welles, 1943
    †_Alzadasaurus_
    †_Thalassiosaurus_
    †_Thalassonomosaurus_

†_Styxosaurus snowii_ (Williston, 1890) Welles, 1943
    †_Alzadasaurus kansasensis_
    †_Alzadasaurus pembertoni_
    †_Thalassiosaurus ischiadicus_
    †_Thalassonomosaurus marshi_

†_Styxosaurus browni_ Welles, 1952
    [is now jr. synon. of †_Hydralmosaurus serpentinus_ (Cope, 1877) Welles, 1943 _sensu_ O'Keefe, 2001]
    [Treated as a valid species of genus _Styxosaurus_ by Sato, 2003]

Reference(s):

O'Keefe, F. R., 2001: A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia).
–Acta Zoologica Fennica: Vol. #213, pp. 1-63

Sato, T., 2003: Terminonatator ponteixensis, a new elasmosaur (Reptilia: Sauropterygia) from the Upper Cretaceous of Saskatchewan.
–Journal of Vertebrate Paleontology: Vol. 23, #1, pp. 89-103