Genus: Henosferus ROUGIER, MARTINELLI, FORASIEPI & NOVACEK, 2007
Etymology: Greek, henos, "old" and Latin, ferus, "animal."

Species: molus ROUGIER, MARTINELLI, FORASIEPI & NOVACEK, 2007
Etymology: Latin, mola, "millstone" in reference to the well-developed talonid of the lower molars.

Holotype: MPEF 2353

Locality: Queso Rallado Locality, 42°24'33.55"S, 69°13'50.1"W, about 3 miles west-northwest of the village of Cerro Condor, Chubut Province, Patagonia, Argentina.

Horizon: Puesto Almada Member, Canadon Asfalto Formation.

Biostratigraphy:

Age: Callovian Stage, Upper Dogger Epoch, Upper Middle Jurassic-Oxfordian Stage, Lower Malm Epoch, Lower Late Cretaceous.

Material: Right lower jaw with dentary well preserved, bearing the distal half of p1 and p2 and almost complete m1.

Hypodigm:

MPEF 2354: Left lower jaw bearing the roots of the first and second incisors, the broken crown of the third and fourth incisors, a complete canine, 5 premolars, and 3 damaged molars.

Tentatively referred specimen:

MPEF 2355: Isolated upper premolar enclosed in a small block, wich also includes indeterminate fragments of bone.