synconoid grade
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 13:24, 12 September 2013 by Andreas Plank (Talk | contribs)
synconoid grade also leuconoid grade, asconoid grade: (Porifera) A grade of construction intermediate between the asconoid and the leuconoid, in which each radial canal is subdivided into elongate-flagellate chambers grouped around a common excurrent channel.
