Fig. 143. Left mandible—natural size.
Notogale tenuis Ameghino
? Pharsophorus tenuis Amegh., 1897, Bol. Inst. Geog., Argen., t. 18, p. 504.
This species was founded by Ameghino on a single lower premolar 3 which is 3 mm. in length. No further description is given and no figure.
Proborhyaena Ameghino
Proborhyaena Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 501.
The genus is founded on a large lower jaw carrying the canine and premolars 3 and 4 and roots or alveoli for the other teeth. It is the largest carnivore recorded from Patagonia, and as large as a small bear. It is not possible to place its exact relationships, for the most essential teeth are wanting, but it is certainly a distinct genus as indicated by the reduced size of premolar 4 and the plump character of the teeth.
Proborhyaena gigantea Ameghino
P. gigantea Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 501.
We found no specimens of this great carnivore, so I am reproducing Ameghino’s figure and measurements. The heavy canine is channeled on the sides and much worn on the posterior face. Premolar 3 is a plump tooth, its crown consisting mostly of a single median cusp, but with a small heel behind, and, strikingly enough, premolar 4 is a smaller and simpler tooth with a single cusp.