Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Class Mammalia Linnaeus, 1758 - mammals
Order Cetacea Brisson, 1762 - whales, dolphins, and porpoises
see Infraorder Cetacea Brisson, 1762
Suborder Odontoceti Flower, 1867 - toothed whales
see Parvorder Odontoceti Flower, 1867
Family Kogiidae Gill, 1871
Genus Kogia Gray, 1846 - pygmy and dwarf sperm whales
Kogia breviceps (Blainville, 1838) - pygmy sperm whale
Kogia simus (Owen, 1866) - dwarf sperm whale