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"

Phylum Chordata

Class Acanthodii - extinct

Class Actinistia (coelacanths)

Class Actinopterygii (ray-finned fish)

* Subclass Chondrostei
** Polypteriformes, "including the bichirs and reedfishes [In Nelson, Polypteriformes is placed in its own subclass Cladistia.] "
** Acipenseriformes, "including the sturgeons and paddlefishes"
* Subclass Neopterygii
** Infraclass Holostei
*** Lepisosteiformes, "the gars"
*** Amiiformes, "the bowfins"
** Infraclass Teleostei
*** Superorder Osteoglossomorpha
**** Osteoglossiformes, "the bony-tongued fishes"
**** Hiodontiformes, "including the mooneye and goldeye"
*** Superorder Elopomorpha
**** Elopiformes, "including the ladyfishes and tarpon"
**** Albuliformes, "the bonefishes"
**** Notacanthiformes, "including the halosaurs and spiny eels"
**** Anguilliformes, "the true eels and gulpers"
**** Saccopharyngiformes, "including the gulper eel"
*** Superorder Clupeomorpha
**** Clupeiformes, "including herrings and anchovies"
*** Superorder Ostariophysi
**** Gonorynchiformes, "including the milkfishes"
**** Cypriniformes, "including barbs, carp, danios, goldfishes, loaches, minnows, rasboras"
**** Characiformes, "including characins, pencilfishes, hatchetfishes, piranhas, tetras."
**** Gymnotiformes, "including electric eels and knifefishes"
**** Siluriformes, "the catfishes"
*** Superorder Protacanthopterygii
**** Order Salmoniformes, "including salmon and trout"
**** Esociformes "the pike"
**** Osmeriformes, "including the smelts and galaxiids"
*** Superorder Stenopterygii
**** Ateleopodiformes, "the jellynose fish"
**** Stomiiformes, "including the bristlemouths and marine hatchetfishes"
*** Superorder Cyclosquamata
**** Aulopiformes, "including the Bombay duck and lancetfishes"
*** Superorder Scopelomorpha
**** Myctophiformes, "including the lanternfishes"
*** Superorder Lampridiomorpha
**** Lampriformes, "including the oarfish, opah and ribbonfishes"
*** Superorder Polymyxiomorpha
**** Polymixiiformes, "the beardfishes"
*** Superorder Paracanthopterygii
**** Percopsiformes, "including the cavefishes and trout-perches"
**** Batrachoidiformes, "the toadfishes"
**** Lophiiformes, "including the anglerfishes"
**** Gadiformes, "including cods"
**** Ophidiiformes, "including the pearlfishes"
*** Superorder Acanthopterygii
**** Mugiliformes, "the mullets"
**** Atheriniformes, "including silversides and rainbowfishes"
**** Beloniformes, "including the flyingfishes"
**** Cetomimiformes, "the whalefishes"
**** Cyprinodontiformes, "including livebearers, killifishes"
**** Stephanoberyciformes, "including the ridgeheads"
**** Beryciformes, "including the fangtooths and pineconefishes"
**** Zeiformes, "including the dories"
**** Gobiesociformes, "the clingfishes" [In ITIS, Gobiesociformes is placed as the suborder Gobiesocoidei of the order Perciformes.]
**** Gasterosteiformes "including sticklebacks, pipefishes, seahorses"
**** Syngnathiformes, "including the seahorses and pipefishes" [In Nelson and ITIS, Syngnathiformes is placed as the suborder Syngnathoidei of the order Gasterosteiformes.]
**** Synbranchiformes, "including the swamp eels"
**** Tetraodontiformes, "including the filefishes and pufferfish"
**** Pleuronectiformes, "the flatfishes"
**** Scorpaeniformes, "including scorpionfishes and the sculpins"
**** Perciformes "40% of all fish including anabantids, Centrarchids (incl. bass and sunfish), Cichlids, gobies, gouramis, mackerel, perches, scats, whiting, wrasses"

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

References

See also

* List of animal classes


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