Oligocene to Recent | image = Sperm_whale1b.jpg | image_caption = Sperm Whale, Physeter macrocephalus | image_width = 250px | regnum = Animalia | phylum = Chordata | classis = Mammalia | ordo = Cetacea | subordo = Odontoceti | superfamilia = Physeteroidea | superfamilia_authority = Gray 1868 | subdivision_ranks = Families and genera | subdivision = See text }} The sperm whale family or simply the sperm whales's the collective name given to three species of whale found worldwide; the Sperm Whale,… (More on Kogiidae)