Genus: Lagosuchus ROMER, 1971
Etymology: Greek, lagos, "rabbit" and Greek, souchos, "crocodile."

Species: talampayensis ROMER, 1971
Etymology: In reference to Puerta de Talampaya, La Rioja Province, Argentina.

Holotype: UPLR 09, (La Plata Museum No. 64-XI-14-11)

Locality: Southwest part of the Los Chanares locality, “2 km north of the mouth of Rio Chanares,” more accurately located 3 km north of the north branch of the Chanares River and 5 km southwest of the Puerta de Talampaya, La Rioja Province, Argentina.

Horizon: Los Chanares Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Late Triassic.

Material: Left scapulacoracoid, femur, tibia, fibula, and most of pes, and dorsal vertebrae.

Note: Found in a block with the type of Gracilisuchus stipanicicorum.

Referred material:

ROMER, 1972

MCZ 4137 (formally catalouged as MCZ 4116): Femur, articulated with which is the proximal end of a tibia, a series of dorsal vertebrae, fragmentary remains of the pelvis.

Tucuman collections, Number: Not given: A hind leg.