Dodatak:Popis sisavaca, Ar

Ara

Arapahovius Savage & Waters, 1978 †

• Arapahovius advena Bown & Rose, 1991 †
• Arapahovius gazini Savage & Waters, 1978 †

Mammalia → Primates → Tarsiiformes → Omomyidae → Anaptomorphinae → Anaptomorphini

Arb

, Arborimus

Arc

†Potporodica Archaeolaginae

1. †Archaeolagus Dice 1917
2. †Hypolagus Dice 1917
3. †Notolagus Wilson 1938
4. †Panolax Cope 1874

Mammalia → Lagomorpha → Leporidae

†Archaeolagus Dice 1917

1. †Archaeolagus acaricolus Dawson 1958
2. †Archaeolagus buangulus Stevens et al. 1969
3. †Archaeolagus emeraldensis Barnosky 1986
4. †Archaeolagus macrocephalus Matthew 1907
5. †Archaeolagus primigenius Matthew 1907

Mammalia → Lagomorpha → Leporidae → Archaeolaginae , Archboldomys

Nadred Archonta Gregory 1910

1. Menotyphla Haeckel

Mammalia → Eutheria → Placentalia → Euarchontoglires , Arctictis , Arctocebus , Arctocephalus , Arctogalidia , Arctonyx

Ard

, Ardops

Ari

Ariteus Gray, 1838

• Ariteus flavescens (Gray, 1831)

Mammalia → Chiroptera → Phyllostomidae → Stenodermatinae → Stenodermatini

Art

, Artibeus

Red Artiodactyla Owen, 1848

1. Antilocapridae Gray, 1866
2. Bovidae Gray, 1821
3. Camelidae Gray, 1821
4. Cervidae Goldfuss, 1820
5. Giraffidae Gray, 1821
6. Hippopotamidae Gray, 1821
7. Moschidae Gray, 1821
8. Suidae Gray, 1821
9. Tayassuidae Palmer, 1897
10. Tragulidae Milne-Edwards, 1864

Mammalia → Theria → Eutheria

Arv

, Arvicanthis , Arvicola