orificial wall
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 23:35, 13 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_simple_(-definition))
orificial wall: 1. In Gymnolaemata, an exterior zooidal wall that bears or defines the orifice through which the lophophore passes.
2. In Stenolaemata, an orifice through which the tentacles protrude.
