List of chordate orders
# List of chordate orders

This article contains a list of all of the classes and orders that are located in the Phylum Chordata.

## Subphylum Cephalochordata

### Class Leptocardii: Lancelets

* Order Amphioxiformes

### Family Pikaiidae †

* Genus Pikaia †

## Olfactores (unranked)

### Subphylum Tunicata

**Class Ascidiacea: Ascideans and sessile tunicates**

* Order Enterogona
* Order Pleurogona
* Order Aspiraculata

**Class Thaliacea: Pelagic tunicates**

* Order Doliolida
* Order Pyrosomida
* Order Salpida: salps

**Class Appendicularia: Solitary, free-swimming tunicates**

* Order Copelata

### Subphylum Vertebrates

**Infraphylum Cyclostomata, Superclass Agnatha: Paraphyletic jawless vertebrates**

**Class Myxini: Hagfish**

* Order Myxiniformes
      * Family Myxinidae

**Infraphylum Cyclostomata, Superclass Agnatha: Paraphyletic jawless vertebrates**

**Class Hyperoartia: Lampreys and their † kin**

* Order Petromyzontiformes

**Infraphylum Gnathostomata: Jawed vertebrates**

**Class Placodermi †**

* Order Acanthothoraci
* Order Arthrodira
* Order Antiarchi
* Order Brindabellaspida
* Order Petalichthyida
* Order Phyllolepida
* Order Ptyctodontida
* Order Rhenanida
* Order Pseudopetalichthyida (The placement of this order is debated.)
* Order Stensioellida (The placement of this monotypic order is debated.)

**Infraphylum Gnathostomata: Jawed vertebrates**

**Class Chondrichthyes: Cartilaginous fish**

* Subclass Elasmobranchii
   * Superorder Batoidea
      * Order Rajiformes: rays and skates
      * Order Rhinopristiformes: sawfishes
      * Order Torpediniformes: electric rays
      * Order Myliobatiformes: (sting)rays
   * Superorder Selachimorpha (sharks)
      * Order Heterodontiformes: bullhead sharks
      * Order Orectolobiformes: carpet sharks
      * Order Carcharhiniformes: ground sharks
      * Order Lamniformes: mackerel sharks
      * Order Hexanchiformes: frilled and cow sharks
      * Order Squaliformes: dogfish sharks
      * Order Squatiniformes: angel sharks
      * Order Pristiophoriformes: saw sharks
* Subclass Holocephali
   * Order Chimaeriformes: chimaeras

**Infraphylum Gnathostomata: Jawed vertebrates**

**Class Acanthodii †**

* Order Climatiiformes
* Order Ischnacanthiformes
* Order Acanthodiformes

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Osteichthyes: Bony fish**

**Class Actinopterygii: Ray-finned fish**

* Order Asarotiformes †
* Order Discordichthyiformes †
* Order Paphosisciformes †
* Order Scanilepiformes †
* Order Cheirolepidiformes †
* Order Paramblypteriformes †
* Order Rhadinichthyiformes †
* Order Palaeonisciformes †
* Order Tarrasiiformes †
* Order Pachycormiformes †
* Order Ptycholepiformes †
* Order Redfieldiiformes †
* Order Haplolepidiformes †
* Order Aeduelliformes †
* Order Platysomiformes †
* Order Dorypteriformes †
* Order Eurynotiformes †

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Osteichthyes: Bony fish**

**Class Actinopterygii: Ray-finned fish**

**Subclass Cladistii**

* Order Polypteriformes

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Osteichthyes: Bony fish**

**Class Actinopterygii: Ray-finned fish**

**Subclass Chondrostei**

* Order Acipenseriformes: sturgeons and paddlefishes

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Osteichthyes: Bony fish**

**Class Actinopterygii: Ray-finned fish**

**Subclass Neopterygii**

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

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Osteichthyes: Bony fish**

**Class Sarcopterygii: Lobe-finned fish**

* Subclass Actinistia (coelacanths)
   * Order Coelacanthiformes, the coelacanth
* Subclass Dipnoi (lungfish)
   * Order Ceratodontiformes
   * Order Lepidosireniformes

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Tetrapoda**

**Class Amphibia: Amphibians**

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

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Tetrapoda**

**Class Reptilia: Reptiles**

* Subclass Diapsida
   * Infraclass Archosauromorpha
      * Superorder Crocodylomorpha
         * Order Crocodilia (Crocodilians)
      * Class Aves (Birds)
   * Infraclass Lepidosauromorpha
      * Superorder Lepidosauria
         * Order Rhynchocephalia (tuataras)
         * Order Squamata (lizards, snakes)
* Subclass Anapsida
   * Order Testudines (turtles and their kin)

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Tetrapoda**

**Class Aves: Birds**

* Subclass Neornithes
* Infraclass Palaeognathae
   * Order Apterygiformes kiwis
   * Order Casuariiformes cassowaries and emu
   * Order Rheiformes rheas
   * Order Struthioniformes, ostriches
   * Order Tinamiformes, tinamous
* Infraclass Neognathae
   * Superorder Galloanserae (fowl)
      * Order Anseriformes, waterfowl
      * Order Galliformes, fowl
   * Superorder Neoaves
      * Order Sphenisciformes, penguins
      * Order Gaviiformes, loons
      * Order Podicipediformes, grebes
      * Order Procellariiformes, albatrosses, petrels, and allies
      * Order Pelecaniformes, pelicans and allies
      * Order Ciconiiformes, storks and allies
      * Order Phoenicopteriformes, flamingos
      * Order Accipitriformes, eagles, hawks and allies (taxonomists have traditionally placed these groups in the Falconiformes)
      * Order Falconiformes, falcons
      * Order Opisthocomiformes, hoatzin (this enigmatic bird was traditionally treated as a family within either the Galliformes or Cuculiformes)
      * Order Gruiformes, cranes and allies
      * Order Charadriiformes, plovers and allies
      * Order Pterocliformes, sandgrouse (this enigmatic group was traditionally treated as a family in any of three different orders: Charadriiformes, Ciconiiformes, and Columbiformes)
      * Order Columbiformes, doves and pigeons
      * Order Psittaciformes, parrots and allies
      * Order Cuculiformes, cuckoos
      * Order Strigiformes, owls
      * Order Caprimulgiformes, nightjars and allies
      * Order Apodiformes, swifts
      * Order Coliiformes, mousebirds
      * Order Trogoniformes, trogons
      * Order Coraciiformes, kingfishers
      * Order Piciformes, woodpeckers and allies
      * Order Passeriformes, passerines

**Infraphylum Gnathostomata: Jawed vertebrates**

**Superclass Tetrapoda**

**Class Mammalia: Mammals**

* Subclass Prototheria
   * Order Monotremata, monotremes
* Subclass Theria
   * Infraclass Marsupialia
      * Order Didelphimorphia, opossums
      * Order Paucituberculata, rat opossums
      * Order Microbiotheria, monito del monte
      * Order Dasyuromorphia, marsupial carnivores
      * Order Peramelemorphia, marsupial omnivores
      * Order Notoryctemorphia, marsupial moles
      * Order Diprotodontia, marsupial herbivores; kangaroos, wallabies, possums and allies
   * Infraclass Eutheria
      * Magnorder Atlantogenata
         * Superorder Afrotheria
            * Grandorder Afrosoricida
               * Order Afrosoricida, tenrecs and golden moles
               * Order Macroscelidea, elephant shrews
               * Order Tubulidentata, aardvark
            * Grandorder Paenungulata
               * Order Hyracoidea, hyraxes
               * Mirorder Tethytheria
                  * Order Proboscidea, elephants
                  * Order Sirenia, manatees and dugongs
         * Superorder Xenarthra
            * Order Cingulata, armadillos
            * Order Pilosa, sloths and anteaters
      * Magnorder Boreoeutheria
         * Superorder Laurasiatheria
            * Order Eulipotyphla, hedgehogs, shrews, moles
            * Grandorder Ferungulata
               * Order Cetartiodactyla, cetaceans and even-toed ungulates
               * Clade Pegasoferae
                  * Order Chiroptera, bats
                  * Mirorder Zooamata
                     * Order Perissodactyla, odd-toed ungulates; horses, rhinos, tapirs
                     * Clade Ferae
                        * Order Pholidota, pangolins
                        * Order Carnivora, carnivores; cats, dogs, bears, seals, sea lions and others
                        * Order †Creodonta hyaenodontidae hyeanodon, dissopsalis, sarkastostodon, and megistotherium.
         * Superorder Euarchontoglires
            * Grandorder Euarchonta
               * Mirorder Sundatheria
                  * Order Dermoptera, colugos
                  * Order Scandentia, treeshrews
               * Mirorder Primatomorpha
                  * Order Primates, lemurs, monkeys, apes and allies
            * Grandorder Glires
               * Order Rodentia, rodents
               * Order Lagomorpha, rabbits, hares and pikas
