Genus: Argentinosaurus BONAPARTE & CORIA, 1993
Etymology: In reference to Argentina, the country where the specimen was found, and Greek, sauros, lizard: “Argentina lizard”.

Species: huinculensis BONAPARTE & CORIA, 1993
Etymology: In reference to the Huincul Member of the Rio Limay Formation.

Holotype: Paleontologia de Vertebrados en el Museo Municipal “Carmen Funes” de Plaza Huincul, Province of Neuquen, con la sigal PVPH-1.

Locality: Plaza Huincul, Neuquen Province, Patagonia, Argentina.

Horizon: Rio Limay Formation.

Biostratigraphy:

Age: Albian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch-Cenomanian Stage,
Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Early Cretaceous.

Material: Dorsal neural spine, 4 nearly complete dorsal vertebrae, rib fragments, fragmentary sacrum, and right tibia.
Note: 2 of the dorsal vertebrae are fused to each other (R. Coria pers. comm.).