- polypidian vesicle
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(BRYOZOA)A polypidian bud, double-layered, with an undifferentiated internal epithelium lined central cavity.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
polypidian vesicle
Look at other dictionaries:
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 … Dictionary of invertebrate zoology
