Archaeohyrax Ameghino, 1897 † (original description)
Archaeolophus Ameghino, 1897, nom. nud. † accepted as Carolozittelia Ameghino, 1901 † (original description)
Archoeophylus Ameghino, 1897 † (original description)
Argyrohyrax Ameghino, 1897, nom. nud. † accepted as Plagiarthrus Ameghino, 1896 † (original description)
Asteromys Ameghino, 1897, nom. nud. † accepted as Asteromys Ameghino, 1897 † (original description)
Cephalomys Ameghino, 1897, nom. nud. † accepted as Cephalomys Ameghino, 1897 † (original description)
Eudolops Ameghino, 1897, nom. nud. † accepted as Eudolops Ameghino, 1897 † (original description)
Glyptatelus Ameghino, 1897, nom. nud. † accepted as Glyptatelus Ameghino, 1897 † (original description)
Pharsophorus Ameghino, 1897 † (original description)
Proadiantus Ameghino, 1897, nom. nud. † accepted as Proadiantus Ameghino, 1897 † (original description)
Proborhyaena Ameghino, 1897, nom. nud. † accepted as Proborhyaena Ameghino, 1897 † (original description)
Proedrium Ameghino, 1897 † (original description)
Prosotherium Ameghino, 1897 † (original description)
Rhynchippus Ameghino, 1897 † (original description)