opesium
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 23:41, 13 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_noun-simple)
opesium (noun; plural -ia; Greek diminutive ope, hole): (Bryozoa: Gymnolaemata) In Anasca, a large opening below the frontal membrane bordered by the cryptocyst; functioning as a passageway for the lophophore in some species.
