Artiodactyla
Order within Mammalia
Aetiocetidae
Aglaocetidae
Agorophiidae
Albireonidae
Allodelphinidae
Ambulocetidae
Anoplotheriidae
Anthracotheriidae
Antilocapridae
Archaeomerycidae
Ashleycetidae
Balaenidae
Balaenopteridae
Basilosauridae
Bovidae
Cainotheriidae
Camelidae
Cervidae
Cervinae
Cetotheriidae
Cetotheriopsidae
Choeropotamidae
Climacoceratidae
Dacrytheriidae
Dalpiazinidae
Delphinidae
Dichobunidae
Doliochoeridae
Entelodontidae
Eomysticetidae
Eurhinodelphinidae
Gelocidae
Giraffidae
Helohyidae
Hippopotamidae
Homacodontidae
Hypertragulidae
Iniidae
Inticetidae
Kekenodontidae
Kentriodontidae
Kogiidae
Leptochoeridae
Leptomerycidae
Lipotidae
Llanocetidae
Lophiomerycidae
Mammalodontidae
Merycoidodontidae
Microzeuglodontidae
Monodontidae
Moschidae
Odobenocetopsidae
Oromerycidae
Pakicetidae
Palaeomerycidae
Patriocetidae
Pelocetidae
Phocoenidae
Physeteridae
Platanistidae
Pontoporiidae
Prolibytheriidae
Prosqualodontidae
Protoceratidae
Protocetidae
Raoellidae
Remingtonocetidae
Sanitheriidae
Simocetidae
Squalodelphinidae
Squalodontidae
Squaloziphiidae
Suidae
Tayassuidae
Tragulidae
Tranatocetidae
Waipatiidae
Xenorophidae
Xiphodontidae
Ziphiidae