Archaeophylus Ameghino, 1897 † (original description)
Archaeopithecus Ameghino, 1897 † (original description)
Eupithecops Ameghino, 1897, nom. nud. † accepted as Eupithecops Ameghino, 1897 † (original description)
Isotemnus Ameghino, 1897 † (original description)
Lambdoconus Ameghino, 1897, nom. nud. † accepted as Lambdaconus Ameghino, 1897 † (original description)
Notopithecus Ameghino, 1897 † (original description)
Notostylops Ameghino, 1897 † (original description)
Orchiomys Ameghino, 1897, nom. nud. † accepted as Cephalomys Ameghino, 1897 † (original description)
Parastylops Ameghino, 1897, nom. nud. † accepted as Pleurostylodon Ameghino, 1897 † (original description)
Pleurostylodon Ameghino, 1897, nom. nud. † accepted as Pleurostylodon Ameghino, 1897 † (original description)
Polydolops Ameghino, 1897 † (original description)
Prohegetotherium Ameghino, 1897, nom. nud. † accepted as Prohegetotherium Ameghino, 1897 † (original description)
Propachyrucos Ameghino, 1897 † (original description)
Properiptychus Ameghino, 1897, nom. nud. † accepted as Properiptychus Ameghino, 1897 † (original description)
Prostylops Ameghino, 1897, nom. nud. † accepted as Isotemnus Ameghino, 1897 † (original description)
Protheosodon Ameghino, 1897, nom. nud. † accepted as Protheosodon Ameghino, 1897 † (original description)