Genus: Occitanosaurus BARDET, GODEFROIT & SCIAU, 1999
Etymology: From the area where the Occitian language is spoken, currently includes most of southern France, Val D’Aran of Spain and several Pidemont valleys of Italy and Greek, sauros, "lizard": Occitian lizard.

Species: tournemirensis (SCIAU, CROCHET & MATTEI, 1990) BARDET, GODEFROIT & SCIAU, 1999
Etymology: In reference to the Village of Tournemire, Aveyron Department, South France.
= Plesiosaurus tournemirensis SCIAU, CROCHET & MATTEI, 1990

Holotype: Musee Municipal de la ville de Millau, Aveyron, MMM J. T. 86-100

Locality: Village of Tournemire, 43°56’25”N, 3°1’14”E, Aveyron Department, South France.

Horizon: Marnes feuilletees, Aalensis zone, Pleydellia celtica Subzone.

Biostratigraphy:

Age: Upper Toarcien Stage, Upper Malm Epoch, Early Jurassic.

Material: Skull and fragmentary skeleton.