Template:Chordata

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Extant chordate classes

Kingdom Animalia
(unranked) Bilateria
Superphylum Deuterostomia

Cephalochordata	Leptocardii (lancelets)

Tunicata
(Urochordata)

Appendicularia (larvaceans)

Acopa

Phlebobranchia¹
Aplousobranchia¹

Cyclostomata	Myxini (hagfish) Hyperoartia (lampreys)

Gnathostomata
(jawed vertebrates)

Chondrichthyes (cartilaginous fish: sharks, rays, chimaeras)

Euteleostomi
(bony vertebrates)

Actinopterygii (ray-finned fish)

Sarcopterygii
(lobe-finned fish)

Actinistia (coelacanths)²

Dipnoi (lungfish)²

Lissamphibia (modern amphibians: frogs, salamanders, caecilians)

Mammalia (mammals)

Testudines (turtles)³

Archosauria	Crocodilia (crocodilians)³ Aves (birds)

¹orders of class Ascidiacea (sea squirts)
²classes or subclasses of clade Sarcopterygii (lobe-finned fish and descendants)
³orders of class Reptilia (reptiles)
italics denote paraphyletic groups

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