atrial bag
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 13:23, 12 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_simple_(-definition))
atrial bag: (Bryozoa) That part of a polypidian vesicle attached to the frontal wall of a developing zooid, from which the tentacle sheath is formed.
