_
Acrodelphinidae
Aetiocetidae
Agorophiidae
Allodelphinidae
Ambulocetidae
Balaenidae
Balaenopteridae
Basilosauridae
Cetotheriidae
Delphinidae
Eschrichtiidae
Eurhinodelphidae
Eurhinodelphinidae
Hapalodectidae
Hyperoodontidae
Iniidae
Kentriodontidae
Kogiidae
Lipotidae
Llanocetidae
Mammalodontidae
Mesonychidae
Monodontidae
Neobalaenidae
Odobenocetopsidae
Phocoenidae
Physeteridae
Platanistidae
Protocetidae
Remingtonocetidae
Rhabdosteidae
Simocetidae
Squalodelphidae
Squalodontidae
Tranatocetidae
Triisodontidae
Waipatiidae
Xenorophidae
Ziphiidae