Protacanthopterygii is a taxon superorder of bony ray-finned fish. Protacanthopterygii is composed of primitive teleosts.
Their common fish anatomy usually include: lack of specialization; greater than 24 vertebrae; adipose fin; mesocoracoid bone;
glossohyal teeth; non-protrusible upper jaw; proethmoid and several perichondral ethmoid bones commissural fibers; one supraorbital
foramen and no gular plate.
