Mammalia Linnaeus, 1758 - mammals
Cetacea Brisson, 1762 - whales, dolphins, and porpoises
see Infraorder Cetacea Brisson, 1762
Odontoceti Flower, 1867 - toothed whales
see Parvorder Odontoceti Flower, 1867
Physeteridae Gray, 1821 - sperm whales
1 Kogia Gray, 1846 - pygmy and dwarf sperm whales
2 Physeter Linnaeus, 1758 - sperm whale