Choanoflagellida


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Choanoflagellida

[¦kō·ə·nō·flə′jel·ə·də]
(invertebrate zoology)
An order of single-celled or colonial, colorless flagellates in the class Zoomastigophorea; distinguished by a thin protoplasmic collar at the anterior end.
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Life-history and ultrastructure of a new marine species of Proterospongia (Choanoflagellida).