Editing List of chordate orders (section)

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[[File:Lepisosteus oculatus.jpg|thumb|250px|Spotted gar, ''Lepisosteus oculatus'']]
This article contains a list of all of the [[Class (biology)|classes]] and [[Order (biology)|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.