- epipleural bone
(rib) one of a series of bones found in the horizontal septum (separating the upper and lower muscle masses of the body - epaxials and hypaxials). Epipleural ribs may be associated with the anterior pleural ribs, e.g. in Perca or with the vertebra, e.g. in Gobiidae. Also called dorsal rib and intermuscular bone
Dictionary of ichthyology. 2009.