Genus: Arctosuchus BROOM, 1911
Etymology: Greek, arktos, “bear” and Greek, suchos, “crocodile.”

Species: tigrinus (OWEN, 1876) BROOM, 1911
Etymology:
= Lycosaurus tigrinus OWEN, 1876

Holotype: BMNH R1719

Locality: Klu Klu Mouth, Mildenhals, Fort Beaufort District, Western Cape Province, South Africa.

Horizon: Hoedemaker member, Middle Teekloof Formation.

Biostratigraphy: Tropidostoma zone (Tropidostoma-Endothidon Assemblage zone KEYSER, 1979, SACS, 1980, Tropidostoma microtrema zone KEYSER & SMITH, 1977-78, Lower Cistecephalus zone KITCHING, 1970, 1977, Endothiodon zone, WATSON, 1914).

Age: Tatarian Age, Lopingian Subepoch, Zechstein Epoch, Late Permian.

Material: Fragmentary skull and fragmentary dentary.