Genus: Archaeodontosaurus BUFFETAUT, 2005
Etymology: Greek, archaios, "ancient," Greek, odous, "tooth," and Greek, sauros, "lizard": refering to archaic, prosauropod-like appearance of the teeth.

Species: descouensi BUFFETAUT, 2005
Etymology: In honor of Dr. Didier Descouens (Toulouse), thanks to whom the specimen could be acquired by the Toulouse Natural History Museum and as made available for scientific descritpion.

Holotype: MHNDPal 2-396

Locality: Vicinity of Ambondromamy, Majunga Basin, northwestern Madatascar.

Horizon: Isalo IIIbFormation.


Age: Bathonian Stage, Dogger Epoch, Early Jurassic.

Material: Incomplete right dentary containing several teeth.