Genus: Limaysaurus SALGADO, GARRIDO, COCCA & CICCA, 2004
Etymology: In reference to Rio Limay, the most important watewway in the area in which the holotype of the type species and referred material was found

Species: tessonei (NOVAS, 1997) SALGADO, GARRIDO, COCCA & CICCA, 2004
= Limaysaurus tessonei NOVAS, 1997 (nomen nudum)
= Rebbachisaurus tessonei CALVO & SALGADO, 1995
= Rayososaurus tessonei (CALVO & SALGADO, 1995)

Holotype: MUCPv-205

Locality: Approximately 5 km Southwest of El Chochon locality, Neuquen Province, Patagonia, Argentina.

Horizon: Top of the Candeleros Member, Rio Limay Formation.


Age: Limayan Tetrapoda Assemblage, Cenomanian Stage, Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Late Early or Middle Cretaceous-Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material: Articulated, well-preserved skeleton, including basicranium, disarticulated cervical vertebrae, articulated posterior dorsals and all caudal vertebrae, complete pelvis and pectoral girdle, nearly complete hind and forelimbs lacking manus.
Note: Gastroliths were found.

Referred material:

MUCPv-206: A disarticulated skeleton composed of two posterior and two anterior cervical vertebrae, and one posterior dorsal vertebra, a sternal plate, 4 metacarpals, ribs and gastric stones.

MCUPv-272: 4 articulated dorsal vertebrae, a pubis, ischium and 6 gastroliths.