Protocetidae
Family within Artiodactyla
Aegicetus
Aegyptocetus
Artiocetus
Babiacetus
Carolinacetus
Crenatocetus
Dhedacetus
Eocetus
Gaviacetus
Georgiacetus
Indocetus
Kharodacetus
Maiacetus
Makaracetus
Natchitochia
Pappocetus
Peregocetus
Pontobasileus
Protocetus
Qaisracetus
Rodhocetus
Takracetus
Togocetus
Tupelocetus