File:EB1911 Polyzoa - Sections - A, Membranipora - B, Cribrilina - C, Lepralioid forms.jpg

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English: Diagrammatic Longitudinal Sections of Cheilostomatous Zooecia: A, Membranipora (after Nitsche); B, Cribrilina; C, Some of the Lepralioid forms. b.c., Body-cavity. cr., Cryptocyst. c.s., Compensation-sac. f.m., Frontal membrane. o., Orifice, through which the tentacles are protruded. op., Operculum. p.m., Parietal muscles. t.s., Tentacle-sheath.
Date published 1911
Source “Polyzoa,” Encyclopædia Britannica (11th ed.), v. 22, 1911, p. 44, Fig. 9.
Author A, after Nitsche; B, C, Sidney Frederic Harmer
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(Reusing this file)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current22:03, 30 January 2020Thumbnail for version as of 22:03, 30 January 2020862 × 576 (122 KB)Bob Burkhardt{{Information |description ={{en|1=Diagrammatic Longitudinal Sections of Cheilostomatous Zooecia: A, ''Membranipora'' (after Nitsche); B, ''Cribrilina''; C, Some of the Lepralioid forms. ''b.c.'', Body-cavity. ''cr.'', Cryptocyst. ''c.s.'', Compensation-sac. ''f.m.'', Frontal membrane. ''o''., Orifice, through which the tentacles are protruded. ''op''., Operculum. ''p.m.'', Parietal muscles. ''t.s.'', Tentacle-sheath. }} |date =published 1911 |source =“Polyzoa,” ''Encyclopæ...