Genus: Euposaurus JOURDAN, 1892
Etymology:

Species: thoillierei LORTET, 1892
Etymology:

Holotype: Musee Guimet d’Histoire Naturelle, Lyon, France; MNHL 15.681(Note. MNHL 15.682 per EVANS, 1994)

Locality: Cerin, Ain Department, France.

Horizon: Calcaire lithographique.

Biostratigraphy:

Age: Upper Kimmeridgian Stage, Malm Epoch, Late Jurassic.

Material: Skull and skeleton.
Note: Should be grouped with Saphenosaurus, Kallimodon, Piocormus and Leptosaurus (EVANS, 1994).
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Species: lorteri HOFFSTETTER, 1964
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