File:EB1911 Sponges - Spermatozoa.jpg

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EB1911_Sponges_-_Spermatozoa.jpg ‎(682 × 333 pixels, file size: 98 KB, MIME type: image/jpeg)

Summary

Description
English: Spermatozoa: a-h, Development of Spermatozoa in Sycon raphanus; h, Mature Spermatozoa; j, Sperm-ball in Mesogloea of Oscarella lobularis; k, Mature Spermatozoon.
Date published 1911
Source “Sponges,” Encyclopædia Britannica (11th ed.), v. 25, 1911, p. 727, fig. 37.
Author After Poléjaeff and Schulze.
Permission
(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.

File history

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Date/TimeThumbnailDimensionsUserComment
current17:12, 11 October 2018Thumbnail for version as of 17:12, 11 October 2018682 × 333 (98 KB)Bob Burkhardt{{Information |description ={{en|1=Spermatozoa: ''a-h'', Development of Spermatozoa in ''Sycon raphanus''; ''h'', Mature Spermatozoa; ''j'', Sperm-ball in Mesogloea of ''Oscarella lobularis''; ''k'', Mature Spermatozoon.}} |date =published 1911 |source =“Sponges,” ''Encyclopædia Britannica'' (11th ed.), v. 25, 1911, p. 727, fig. 37. |author =After Poléjaeff and Schulze. |permission ={{PD-Britannica}} }} Category:Spermatozoa Category:Porifera anatomy
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