Species: stromeri RUSCONI, 1937
Etymology:

Holotype: PVL 752

Locality: 15 km northeast of Puerto Visser, Santa Cruz, Chubut Province,  Argentina.

Horizon: Las Violetas Formation,

Biostratigraphy:

Age: Middle Pliocene Epoch, Upper Neogene Period, Lower Quaternary Subera, Upper Cenozoic Era.

Material: Anterior portion of a left mandibular ramus.