teleostomi

from The Century Dictionary.

• A subclass or class of true fishes, having the arch of the upper jaw formed by specialized jaw-bones (generally both intermaxillary and supramaxillary) and a more or less developed set of membranebones.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) An extensive division of fishes including the ordinary fishes (Teleostei) and the ganoids.