File:EB1911 Planarians - group of Polyclad Turbellaria.jpg

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Summary

Description
English: A group of Polyclad Turbellaria, illustrating the various positions in which the mouth of Planarians may occur, and the concomitant changes in other organs (see legend below).
Date published 1911
Source “Planarians,” Encyclopædia Britannica (11th ed.), v. 21, 1911, p. 708, fig. 2.
Author From Cambridge Natural History, vol. ii. “Worms, &c.” After Lang.
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.
English: Legend:
A,  Anonymus virilis: mouth central, male genital aperture (♂) multiple and biradial.
B, Prosthiostomun siphunculus: mouth anterior, the pharynx protruded through it.
C, Cestoplana: mouth posterior (m); ♂, male; ♀, female genital aperture; Br. brain; CG, eyes especially related to the brain; Ey, marginal eyes; m, mouth; MG, stomach; Ph, Pharynx; s, sucker.

File history

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Date/TimeThumbnailDimensionsUserComment
current16:36, 22 December 2018Thumbnail for version as of 16:36, 22 December 2018850 × 915 (158 KB)Bob Burkhardt{{Information |description ={{en|1=A group of Polyclad Turbellaria, illustrating the various positions in which the mouth of Planarians may occur, and the concomitant changes in other organs (see legend below).}} |date =published 1911 |source =“Planarians,” ''Encyclopædia Britannica'' (11th ed.), v. 21, 1911, p. 708, fig. 2. |author =From ''Cambridge Natural History'', vol. ii. “Worms, &c.” After Lang. |permission ={{PD-Britannica}} }} {{en|Legend:}} {| |-valign="t...
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