Cologenis Ameghino, 1881 † accepted as Cuniculus Brisson, 1762 (original description)
Laniodon Ameghino, 1881 † (original description)
Megalochnus Ameghino, 1881 † accepted as Megalocnus Leidy, 1868 † (original description)
Mylonodon Ameghino, 1881 † accepted as Mylodon Owen, 1839 † (original description)
Orthomys Ameghino, 1881 † (original description)
Plataeomys Ameghino, 1881 † (original description)
Plateomys Ameghino, 1881 † accepted as Plataeomys Ameghino, 1881 † (original description)
Platyodon Ameghino, 1881 † accepted as Diodomus Ameghino, 1885 † (original description)
Plicatodon Ameghino, 1881 † (original description)
Propraopus Ameghino, 1881 † (original description)
Quatriodon Ameghino, 1881 † (original description)
Scelidoodon Ameghino, 1881 † (original description)
Seudolestodon Ameghino, 1881 † (original description)
Ycticyon Ameghino, 1881 accepted as Speothos Lund, 1839 (original description)