Cephalomutilla André, 1909 (original description)
Chapalmalania Ameghino, 1908 † (original description)
Chapalmatherium Ameghino, 1908 † (original description)
Choleopus Ameghino, 1908 accepted as Choloepus Illiger, 1811 (original description)
Erina Canu, 1908 † accepted as Erinella Canu & Bassler, 1927 † (original description)
Hyaenodonops Ameghino, 1908 † accepted as Thylacosmilus Riggs, 1933 † (original description)
Masarygus Brèthes, 1909 (original description)
Nomiocolletes Brèthes, 1909 (original description)
Paractenomys Ameghino, 1908 † (original description)
Pontotatus Ameghino, 1908 † (original description)
Proreithrodon Ameghino, 1908 accepted as Reithrodon Waterhouse, 1837 (original description)