Proborhyaena gigantea Ameghino, 1897

MACN 52-382 (holotype), right mandibular ramus with partial dentition ( Cabeza Blanca locality, Chubut Province; Sarmiento Formation) ; MLP 79-XI1-18-1 (cf. Proborhyaena), left maxilla fragment with partial dentition and a portion of the left mandibular ramus with partial dentition ( Quebrada Fiera, Mendoza Province; “Lower Tertiary volcano-sedimentary complex”). Both specimens from Argentina, Deseadan SALMA, early Oligocene .

Additional information: Patterson & Marshall (1978); Bond & Pascual (1983).