Genus: Sanjuansaurus ALCOBER & MARTINEZ, 2010
Etymology: In reference to the San Juan Province, Argentina, where the specimen was found, and Greek sauros, "lizard."

Species: gordilloi ALCOBER & MARTINEZ, 2010
Etymology: In honor of Paul Gordillo, head fossil preparator and artist in the laboratory of the San Juan Museum and team member during many years of excavation.

Holotype: PVSJ 605

Locality: "Herrera de la base", 3 km northwestern of "Cancha de Bochas" locality, Ischigualasto Provincial Park, San Juan, San Juan Province, Argentina.

Horizon: Canche de Bochas Member, 40m above the base of Ischigualasto Formation.

Biostratigraphy:

Age: Late Carnian Stage, Lower Late Triassic Epoch, Late Triassic.

Material: Left maxilla, partial axial column, from the axis to the 12th caudal vertebra, lacking the 3rd, 4th and anterior half of the 5th dorsal vertebrae, both scapulae, left ulna, ungual phalanx of left? digit III, preacetabular portion of the left ilium, proximal end of left and complete right pubis, both femora and tibiae, right fibula, right astragalus and calcaneum, and left metatarsal II.