_- Adianthidae
- Aegialodontidae
- Amphidontidae
- Amphilestidae
- Amphitheriidae
- Apatemyidae
- Apternodontidae
- Archaeohyracidae
- Arctocyonidae
- Arctostylopidae
- Arsinoitheriidae
- Asiatheriidae
- Astigalidae
- Astrapotheriidae
- Ausktribosphenidae
- Austrotriconodontidae
- Barbereniidae
- Barylambdidae
- Bemalambdidae
- Bolodontidae
- Borhyaenidae
- Carodniidae
- Changlelestidae
- Cimolestidae
- Cimolodontidae
- Cimolomyidae
- Corriebaataridae
- Coryphodontidae
- Cyriacotheriidae
- Deltatheridiidae
- Desmostylidae
- Dicrocynodontidae
- Didolodontidae
- Dimylidae
- Docodontidae
- Dormaaliidae
- Dryolestidae
- Epoicotheriidae
- Ernanodontidae
- Esthonychidae
- Eucosmodontidae
- Eurymylidae
- Ferugliotheriidae
- Geolabididae
- Gondwanatheriidae
- Hahnotheriidae
- Haramiyidae
- Harpyodidae
- Hegetotheriidae
- Herpetotheriidae
- Holoclemensiidae
- Homalodontotheridae
- Hyaenodontidae
- Hyopsodontidae
- Interatheriidae
- Isotemnidae
- Kermackiidae
- Kuehneotheriidae
- Leontiniidae
- Macraucheniidae
- Marsupialia
- Megazostrodontidae
- Mesotheriidae
- Mesungulatidae
- Metacheiromyidae
- Micropternodontidae
- Mimotonidae
- Mioclaenidae
- Morganucodontidae
- Necrolestidae
- Notohippidae
- Oxyaenidae
- Oxyclaenidae
- Palaeoamasidae
- Palaeoryctidae
- Paleoparadoxiidae
- Pantolambdidae
- Pantolambdodontidae
- Pantolestidae
- Pappotheriidae
- Paroxyclaenidae
- Pastoralodontidae
- Pediomyidae
- Peramuridae
- Periptychidae
- Phenacodontidae
- Phenacolophidae
- Plagiaulacidae
- Plesiorycteropodidae
- Plesiosoricidae
- Pleuraspidotheriidae
- Proscalopidae
- Proterotheriidae
- Ptilodontidae
- Ptolemaiidae
- Pyrotheriidae
- Shuotheriidae
- Sloanbaataridae
- Spalacotheriidae
- Stylinodontidae
- Sudamericidae
- Taeniolabidae
- Taeniolabididae
- Tegotheriidae
- Theroteinidae
- Tillotheriidae
- Tinodontidae
- Titanoideidae
- Toxodontidae
- Triconodontidae
- Trigonostylopidae
- Triisiodontidae
- Uintatheriidae
- Zhelestidae