Cetaceans (Cetacea) also commonly known as Dolphins, Marine Mammals, Porpoises or Whales, is a biological order of the phylum Chordata (Chordates) and class Mammalia (Mammals).
Hyperoodontidae
Balaenidae
Eschrichtiidae
Delphinidae
Phocoenidae
Neobalaenidae
Iniidae
Platanistidae
Balaenopteridae
Kogiidae
Physeteridae
Monodontidae
Tubulidentata
Didelphimorphia
Artiodactyla
Chiroptera
Carnivora
Cetacea
Sirenia
Macroscelidea
Proboscidea
Dermoptera
Hyracoidea
Notoryctemorphia
Diprotodontia
Perissodactyla
Pholidota
Primates
Lagomorpha
Rodentia
Pilosa
Scandentia