List of biological orders
This is a list of biological orders in the scientific classification of life-forms.
- this is a work-in-progress: please use the same layout as the entries below for new additions
Animalia (Animals)
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 allies
- 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 (cartilagenous 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 Mammalia (mammals)
- Monotremata: monotremes
- 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
- Afrosoricida: tenrecs and golden moles
- Macroscelidea: elephant shrews
- Tubulidentata: Aardvark
- Hyracoidea: hyraxes
- Proboscidea: elephants
- Sirenia: manatees and dugongs
- Xenarthra (formerly Edentata): sloths, armadillos and anteaters
- Dermoptera: colugos
- Scandentia: tree shrews
- Primates: monkeys, apes and allies
- Rodentia: rodents
- Lagomorpha: rabbits, hares and pikas
- Insectivora: shrews, moles, hedgehogs
- 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
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