Acrostylops Ameghino, 1901 † accepted as Homalostylops Ameghino, 1901 † (original description)
Adpithecus Ameghino, 1901 † accepted as Notopithecus Ameghino, 1897 † (original description)
Albertogaudrya Ameghino, 1901 † (original description)
Amilnedwardsia Ameghino, 1901 † (original description)
Anchistrum Ameghino, 1901 † accepted as Pleurostylodon Ameghino, 1897 † (original description)
Anisolambda Ameghino, 1901 † (original description)
Antepithecus Ameghino, 1901 † (original description)
Asmithwoodwardia Ameghino, 1901 † (original description)
Astraponotus Ameghino, 1901 † (original description)
Caroloameghinia Ameghino, 1901 † (original description)
Carolodarwinia Ameghino, 1901 † (original description)
Carolozittelia Ameghino, 1901 † (original description)
Coelostylops Ameghino, 1901 † (original description)
Decaconus Ameghino, 1901 † (original description)
Dialophus Ameghino, 1901 † (original description)
Edvardocopeia Ameghino, 1901 † (original description)
Edvardotrouessartia Ameghino, 1901 † (original description)
Enneoconus Ameghino, 1901 † (original description)
Entelostylops Ameghino, 1901 † (original description)
Eochalicotherium Ameghino, 1901 † accepted as Isotemnus Ameghino, 1897 † (original description)
Eohyrax Ameghino, 1901 † (original description)
Eomorphippus Ameghino, 1901 † (original description)
Eopachyrucos Ameghino, 1901 † (original description)
Eostylops Ameghino, 1901 † (original description)
Ernestohaeckelia Ameghino, 1901 † accepted as Amilnedwardsia Ameghino, 1901 † (original description)
Ernestokokenia Ameghino, 1901 † (original description)
Guilielmofloweria Ameghino, 1901 † (original description)
Guilielmoscottia Ameghino, 1901 † (original description)
Hedralophus Ameghino, 1901 † (original description)
Henricofilholia Ameghino, 1901 † (original description)
Henricosbornia Ameghino, 1901 † (original description)
Homalostylops Ameghino, 1901 † (original description)
Infrapithecus Ameghino, 1901 † (original description)
Josepholeidya Ameghino, 1901 † (original description)
Maxschlosseria Ameghino, 1901 † (original description)
Microstylops Ameghino, 1901 † (original description)
Notohyrax Ameghino, 1901 † (original description)
Oldfieldthomasia Ameghino, 1901 † (original description)
Othnielmarshia Ameghino, 1901 † (original description)
Paginula Ameghino, 1901 † (original description)
Pantostylops Ameghino, 1901 † (original description)
Paulogervaisia Ameghino, 1901 † (original description)
Pliostylops Ameghino, 1901 † (original description)
Postpithecus Ameghino, 1901 † (original description)
Propyrotherium Ameghino, 1901 † (original description)
Pseudadiantus Ameghino, 1901 † (original description)
Pseudhyrax Ameghino, 1901 † (original description)
Pseudopachyrucos Ameghino, 1901 † (original description)
Pseudostylops Ameghino, 1901 † (original description)
Ricardolydekkeria Ameghino, 1901 † (original description)
Ricardowenia Ameghino, 1901 † (original description)
Rutimeyeria Ameghino, 1901 † (original description)
Scabellia Ameghino, 1901 † accepted as Albertogaudrya Ameghino, 1901 † (original description)
Selenoconus Ameghino, 1901 † (original description)