File:EB1911 Sponges - Spicules of Heteractinellida.jpg

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Summary

Description

English: Spicules of Heteractinellida: A, Typical polyactine. B, Rosette-like form. C, D, E, Nail-like forms.

Date

published 1911

Source

“Sponges,” Encyclopædia Britannica (11th ed.), v. 25, 1911, p. 730, fig. 41.

Author

After G. J. Hinde.

Permission
(Reusing this file)

This image comes from the 13^th 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/Time	Thumbnail	Dimensions	User	Comment
current	15:34, 15 October 2018		554 × 640 (82 KB)	Bob Burkhardt	{{Information \|description ={{en\|1=Spicules of Heteractinellida: ''A'', Typical polyactine. ''B'', Rosette-like form. ''C'', ''D'', ''E'', Nail-like forms. }} \|date =published 1911 \|source =“Sponges,” ''Encyclopædia Britannica'' (11th ed.), v. 25, 1911, p. 730, fig. 41. \|author =After G. J. Hinde. \|permission ={{PD-Britannica}} }} Category:Sponge spicules

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- Q520831