List of chordate orders

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

The subphyla Tunicata and Vertebrata are in the unranked Olfactores clade, while the subphylum Cephalochordata is not. Animals in Olfactores are characterized as having a more advanced olfactory system than animals not in it.

The only extinct classes shown are Placodermi and Acanthodii. Note that there are many other extinct chordate groups that are not shown here.

Subphylum Cephalochordata

Class Leptocardii: Lancelets

Subphylum Tunicata

Class Ascidiacea: Sessile tunicates

Class Thaliacea: Pelagic tunicates

Class Appendicularia: Solitary, free-swimming tunicates

Subphylum Vertebrata

Infraphylum Agnatha: Jawless vertebrates

Superclass Cyclostomata: Extant jawless vertebrates

Class Myxini: Hagfish
  • Order Myxiniformes
Class Hyperoartia: Lampreys

Infraphylum Gnathostomata: Jawed vertebrates

See also: List of fish families

Class Placodermi: Armoured fish †

Class Chondrichthyes: Cartilaginous fish

Class Acanthodii: Spiny sharks †

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 †
Subclass Cladistii
Subclass Chondrostei
Subclass Neopterygii
Class Sarcopterygii: Lobe-finned fish

Superclass Tetrapoda: Four-limbed vertebrates

See also: List of tetrapod families
Class Amphibia: Amphibians
See also: List of amphibians and List of amphibian genera
Class Reptilia: Reptiles
See also: List of reptiles, List of snake genera, and List of reptile genera
Class Aves: Birds
See also: List of birds and List of bird genera
Class Mammalia: Mammals
See also: List of placental mammals, List of monotremes and marsupials, and List of mammal genera

See also

References

  1. ^ In ITIS, Gobiesociformes is placed as the suborder Gobiesocoidei of the order Perciformes.
  2. ^ In Nelson and ITIS, Syngnathiformes is placed as the suborder Syngnathoidei of the order Gasterosteiformes.
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