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
Lipotidae
Delphinidae
Pontoporiidae
Phocoenidae
Neobalaenidae
Platanistidae
Iniidae
Balaenopteridae
Kogiidae
Physeteridae
Monodontidae
Tubulidentata
Afrosoricida
Didelphimorphia
Artiodactyla
Chiroptera
Carnivora
Cetacea
Cingulata
Dasyuromorphia
Sirenia
Macroscelidea
Proboscidea
Erinaceomorpha
Dermoptera
Hyracoidea
Notoryctemorphia
Diprotodontia
Microbiotheria
Monotremata
Perissodactyla
Pholidota
Paucituberculata
Peramelemorphia
Primates
Lagomorpha
Rodentia
Pilosa
Soricomorpha
Scandentia