| Members | Latin Name | Number of Species |
| True seals | |
| Ancestral African mammals | |
| Malagasy carnivores | |
| Marsupial carnivores | |
| Foxes of NA, Eurasia, and Africa | |
| Bat-eared fox of Africa | |
| Pre-Beasts | |
| Mongooses | |
| Strange tail forms | |
| Marsupials | |
| Elephant-shrews | |
| Odd-toed ungulates | |
| Small bats | |
| Even-toed ungulates | |
| Mouse forms | |
| Raccoons, kinkajous | |
| Rhinoceroses | |
| Hedgehogs, moonrats | |
| Walrus | |
| Sea lions and fur seals | |
| Moles, desmans | |
| Pikas | |
| Tapirs | |
| Sea cows | |
| Platypus | |
| Hyraxes | |
| Grey foxes of NA | |
| Whales, dolphins | |
| Cats | |
| | Members | Latin Name | Number of Species |
| Tree shrews | |
| Sloths and anteaters | |
| Squirrel forms | |
| Dogs | |
| Elephants | |
| Rodents | |
| Arctic fox | |
| African palm civet | |
| Old World mice, rats, gerbils | |
| Bears | |
| Tapirs | |
| Bats | |
| Dhole of Asia | |
| True high beings + rodents | |
| Jerboas, jumping mice | |
| Maned wolf of SA | |
| Hedgehog forms | |
| Raccoon dog of Indochina | |
| Armadillos | |
| Mammals | |
| Monito del monte | |
| Monotremes | |
| Bush dog of SA | |
| Aardvark | |
| Australian marsupials | |
| Dog-like carnivores | |
| Ancestral South American mammals | |
| Primates | |
| Foxes of SA | |
| | Members | Latin Name | Number of Species |
| Carnivores | |
| Pangolins, scaly anteaters | |
| Rabbits, hares, pikas | |
| Rabbits, hares | |
| Large bats | |
| Cat-like carnivores | |
| Skunks | |
| Possums, kangaroos, wombats | |
| Spiny anteaters | |
| Lesser panda | |
| Horn forms | |
| Horses | |
| Hyenas | |
| Civets, binturoung | |
| Hunting dog of Africa | |
| New World opposums | |
| Ancestral Laurasiatherian mammals | |
| Weasels, otters, wolverines | |
| Jackals and wolves | |
| Horse forms | |
| Front feeders | |
| New World marsupials | |
| Shrews | |
| Colugos | |
| Tenrecs and golden moles | |
| Placental mammals | |
| Beaver forms | |
| Guinea pigs, chinchillas, agoutis, capybara | |
| Insectivores | |
|