File:EB1911 Sponges - Spicules of Calcareous Sponges.jpg

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English: Spicules of calcareous sponges.
Date published 1911
Source “Sponges,” Encyclopædia Britannica (11th ed.), v. 25, 1911, p. 722, fig. 24.
Author After E. A. Minchin. From Lankester's Treatise on Zoology.
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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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Date/TimeThumbnailDimensionsUserComment
current16:29, 2 October 2018Thumbnail for version as of 16:29, 2 October 2018738 × 671 (141 KB)Bob Burkhardt (talk | contribs){{Information |description ={{en|1=Spicules of calcareous sponges.}} |date =published 1911 |source =“Sponges,” ''Encyclopædia Britannica'' (11th ed.), v. 25, 1911, p. 722, fig. 24. |author =After E. A. Minchin. From Lankester's ''Treatise on Zoology''. |permission ={{PD-Britannica}} }} Category:Sponge spicules

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