Gonorynchiformes

Gonorynchiformes: Orbitosphenoid absent; parietals small; quadrate condyle far forward; teeth absent on fifth ceratobranchial; first three vertebrae specialized and associated with one or more cephalic ribs; suprabranchial (=epibranchial) organ present (consisting of lateral pouches in the posterior part of the branchial chamber behind the fourth epibranchials); mouth small; jaws toothless; no postcleithra; 5-7 hypural plates.
 * See Fishbase

Families in this order:
 * Chanidae
 * Gonorynchidae
 * Kneriidae
 * Phractolaemidae