List of chordate orders

This is a list of biological orders in the scientific classification of chordates.

this is a work-in-progress: please use the same layout as the entries below for new additions

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Phylum Chordata

Class Acanthodii - extinct

Class Actinistia (coelacanths)

Class Actinopterygii (ray-finned fish)

Class Amphibia (amphibians)

• Urodela or Caudata (salamanders)
• Anura (frogs and toads)
• Gymnophiona or Apoda (caecilians)

Class Ascidiacea (ascideans and sessile tunicates)

• Enterogona
• Pleurogona
• Aspiraculata
• Phlebobranchia
• Aplousobranchia
• Stalidobranchia

Class Aves (birds)

• Struthioniformes, Ostrich, emus, kiwis, and wang
• Tinamiformes, tinamous
• Sphenisciformes, penguins
• Gaviiformes, loons
• Podicipediformes, grebes
• Procellariiformes, albatrosses, petrels, and allies
• Pelecaniformes, pelicans and allies
• Ciconiiformes, storks and allies
• Phoenicopteriformes, flamingos
• Anseriformes, waterfowl
• Accipitriformes, eagles, hawks and allies (taxonomists have traditionally placed these groups in the Falconiformes)
• Falconiformes, falcons
• Galliformes, fowl
• Turniciformes, button-quail
• Opisthocomiformes, Hoatzin (this enigmatic bird was traditionally treated as a family within either the Galliformes or Cuculiformes)
• Gruiformes, cranes and allies
• Charadriiformes, plovers and allies
• Pterocliformes, sandgrouse (this enigmatic group was traditionally treated as a family in any of three different orders: Charadriiformes, Ciconiiformes, and Columbiformes)
• Columbiformes, doves and pigeons
• Psittaciformes, parrots and allies
• Cuculiformes, cuckoos
• Strigiformes, owls
• Caprimulgiformes, nightjars and allies
• Apodiformes, swifts
• Coliiformes, mousebirds
• Trogoniformes, trogons
• Coraciiformes, kingfishers
• Galbuliformes, jacamars and puffbirds (these groups were traditionally treated as families in the order Piciformes)
• Piciformes, woodpeckers and allies
• Passeriformes, passerines

Class Chondrichthyes (cartilaginous fish)

• Chimaeriformes: chimaeras
• Heterodontiformes: bullhead sharks
• Orectolobiformes: carpet sharks
• Carcharhiniformes: ground sharks
• Lamniformes: mackerel sharks
• Hexanchiformes: frilled and cow sharks
• Squaliformes: dogfish sharks
• Squatiniformes: angel sharks
• Pristiophoriformes: saw sharks
• Rajiformes: rays and skates

Class Dipnoi (lungfish)

Class Larvacea

Class Leptocardii (lancelets)

Class Mammalia (mammals)

• Subclass Prototheria
  • Monotremata: monotremes
• Subclass Theria
  • Infraclass Marsupialia
    • Didelphimorphia: opossums
    • Paucituberculata: rat opossums
    • Microbiotheria: Monito del Monte
    • Dasyuromorphia: marsupial carnivores
    • Peramelemorphia: marsupial omnivores
    • Notoryctemorphia: marsupial moles
    • Diprotodontia: marsupial herbivores; kangaroos, wallabies, possums and allies
  • Infraclass Eutheria
    • Superorder Afrotheria
      • Afrosoricida: tenrecs and golden moles
      • Macroscelidea: elephant shrews
      • Tubulidentata: Aardvark
      • Hyracoidea: hyraxes
      • Proboscidea: elephants
      • Sirenia: manatees and dugongs
    • Superorder Xenarthra
      • Cingulata: armadillos
      • Pilosa: sloths and anteaters
    • Superorder Laurasiatheria
      • Erinaceomorpha: hedgehogs
      • Soricomorpha: shrews, moles
      • Chiroptera: bats
      • Pholidota: pangolins
      • Carnivora: carnivores; cats, dogs, bears, seals, sea lions and others
      • Perissodactyla: odd-toed ungulates; horses, rhinos, tapirs
      • Artiodactyla: even-toed ungulates: antelopes, cattle, giraffes, camels, pigs, hippos, sheep, goats
      • Cetacea: whales, dolphins, and porpoises
    • Superorder Euarchontoglires
      • Dermoptera: colugos
      • Scandentia: treeshrews
      • Primates: lemurs, monkeys, apes and allies
      • Rodentia: rodents
      • Lagomorpha: rabbits, hares and pikas

Class Myxini (hagfishes)

Class Petromyzontida (lampreys)

Class Placodermi - extinct

Class Reptilia (reptiles)

• Crocodilia (Crocodilians)
• Rhynchocephalia (Tuataras)
• Squamata (Lizards, Snakes)
• Testudines (Turtles and their kin)

Class Thaliacea (pelagic tunicates)

• Doliolida
• Pyrosomida
• Salpida, salps