File:EB1911 Sponges - spicules of Astraeospongia.jpg

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EB1911_Sponges_-_spicules_of_Astraeospongia.jpg ‎(491 × 274 pixels, file size: 28 KB, MIME type: image/jpeg)

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English: A, octactine and B, hexactine spicules of Astraeospongia.
Date published 1911
Source “Sponges,” Encyclopædia Britannica (11th ed.), v. 25, 1911, p. 729, fig. 40.
Author After G. J. Hinde.
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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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current18:47, 14 October 2018Thumbnail for version as of 18:47, 14 October 2018491 × 274 (28 KB)Library Guy (talk | contribs){{Information |description ={{en|1=''A'', octactine and ''B'', hexactine spicules of ''Astraeospongia''.}} |date =published 1911 |source =“Sponges,” ''Encyclopædia Britannica'' (11th ed.), v. 25, 1911, p. 729, fig. 40. |author =After G. J. Hinde. |permission ={{PD-Britannica}} }} Category:Porifera anatomy

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