Genus: Calmasuchus FORTUNY, GALOBART & de SANTISTEBAN, 2011
Etymology: After Pla de la Calma, Teurel Province, Spain, the Catalon toponym for the type locality, and Greek, suchos, "crocodile."

Species: arci FORTUNY, GALOBART & de SANTISTEBAN, 2011
Etymology: Latin, acre, "hard or strong"; referring to the hardness of the matrix that surrounds the fossils and makes preparation of the material difficult.

Holotype: IPS-37401 (LM-83).

Locality: La Mora site, Catalonia basin, Barelona, Teurel Province, Spain.

Horizon: Buntsandstein facies from the Montseny-Llobregat Domain, including in the Areniscas y Lutitas del Figaro unit.

Biostratigraphy:

Age: Early to Middle Anisian Stage, Lower Mid Triassic Epoch, Lower Middle Triassic.

Material: Partial skull roof and palate.

Paratypes:

IPS-37401 (LM-63, LM-101, L, and M1): Skull fragments.

IPS-42407 (LM-4): Complete hemi-mandible.