Polypteriformes


Polypteriformes

[‚päl·əp‚ter·ə′fȯr‚mēz] (vertebrate zoology) An ancient order of actinopterygian fishes distinguished by thick, rhombic, ganoid scales with an enamellike covering, a slitlike spiracle behind the eye, a symmetrical caudal fin, and a dorsal series of free, spinelike finlets.