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choanoflagellate

[koh-uh-noh-flaj-uh-leyt] /ˌkoʊ ə noʊˈflædʒ əˌleɪt/
noun, Zoology
1.
any flagellate of the genera Monosiga and Proterospongia, having a protoplasmic collar encircling the base of the flagellum.
Origin
1895-1900
1895-1900; < Neo-Latin Choanoflagellata name of the order. See choanocyte, flagellata
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Article for choanoflagellate

any protozoan of the flagellate order Choanoflagellida (sometimes classified in the order Kinetoplastida) having a transparent food-gathering collar of cytoplasm around the base of the flagellum. Many choanoflagellates are solitary and sessile (attached to a surface), with or without a stalk. Some have a lorica (rigid covering). These organisms closely resemble the collar cells of sponges. Salpingoeca is an example.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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