birotulate spicules
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 13:23, 12 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_simple_(-definition))
birotulate spicules also amphidiscs: (Porifera) A spicule having a disc or series of radial, umbrella-like spokes at both ends.
