- aproctal bone
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the ventral element in the priapium of the Phallostethidae on which articulate the ctenactinia (q.v.). Also called axial or pelvic bone
Dictionary of ichthyology. 2009.
aproctal bone
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pelvic bone — 1) innominate bone (the pelvic fin bone in Gasterosteidae, sometimes a misnomer for the ectocoracoid. Also called pelvic plate, posterior process, pubic bone and medial plate) 2) the ventral element in the priapium of the Phallostethidae on which … Dictionary of ichthyology
axial bone — the ventral element in the priapium of the Phallostethidae on which articulate the ctenactinia (q.v.). Also called aproctal or pelvic bone … Dictionary of ichthyology
priapium — (plural priapia)) a complex muscular and bony clasping and copulatory organ derived mainly from the pelvic fins, found under the head of male Phallostethoidea with the anus opening on one side and the genital pore on the other. The structure… … Dictionary of ichthyology
