Genus: Simoedosaurus GERVAIS, 1877
Etymology:

Species: lemoinei GERVAIS, 1877
Etymology:

Holotype: MNNH BR 1935

Locality: Reims, West side of the Mont de Berru, Cernay conglomerate, Marne Department, France.

Horizon:

Biostratigraphy:

Age: Paleocene Epoch, Early Paleogene.

Material: 3 vertebrae.

Neotype: BR 1935

Skull lacking the base and the braincase.

BR 1935b: Right premaxillary.

Referred material:

= Simoedosaurus remensis LEMOINE, 1884
Etymology:

Holotype:

Locality: Reims, Marne Department, France.

Horizon:

Biostratigraphy:

Age: Lower Eocene Epoch, Middle Paleogene.

Material: Vertebrae and a prismatic.

 

= Simoedosaurus peroni LEMOINE, 1884
Etymology:

Holotype:

Locality: Reims, Marne Department, France.

Horizon:

Biostratigraphy:

Age: Lower Eocene Epoch, Middle Paleogene.

Material: Head of a humerus.

 

= Simoedosaurus suessonniensis LEMOINE, 1884
Etymology:

Holotype:

Locality: Lignites of Soissonnais, France.

Horizon:

Biostratigraphy:

Age: Lower Eocene Epoch, Middle Paleogene.

Material:

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Species: dakotensis ERICKSON, 1987
Etymology: In reference to North Dakota.

Holotype: SMM P76.10.1

Locality: SE 1/2 Sec. 16, T 138 N, R 84 W, Morton County, North Dakota.

Horizon: Slope Formation.

Biostratigraphy:

Age: Paleocene Epoch, Early Paleogene.

Material: Skull, partial dentary and partial skeleton.

Referred material:

Locality: "Brisbane" locality of Holtzman, North Dakota.

Horizon:

Biostratigraphy:

Age:

Material:

SMM P77.8.284, SMM P78.12. 1: Vertebra centra.