File:EB1911-Gastropoda 33.png

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Description
English: Section of the shell of Triton, Cuv. (From Owen.)

a, Apex.

ac, Siphonal notch of the mouth of the shell.

ac to pc, Mouth of the shell.

w, w, Whorls of the shell.

s, s. Sutures.


Occupying the axis, and exposed by the section, is seen the “columella” or spiral pillar. The upper whorls of the shell are seen to be divided into separate chambers by the formation of successively formed “septa.”
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 11 "Gastropoda".
Author Encyclopædia Britannica

Licensing

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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
current17:16, 9 March 2019Thumbnail for version as of 17:16, 9 March 2019339 × 697 (198 KB)Bob Burkhardt (talk | contribs)rotate; better detail and legibility
03:50, 15 March 2015Thumbnail for version as of 03:50, 15 March 2015412 × 790 (137 KB)Animalparty (talk | contribs)User created page with UploadWizard

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