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File:AmCyc Coal Plants - Sphenopteris tridactylitis.jpg

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Description
English: Illustration of a fossil plant found in coal: Sphenopteris tridactylitis.
Date published 1879
Source The American Cyclopædia, v. 4, 1879, p. 748.
Author Unknown authorUnknown author
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Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:AmCyc_Coal_Plants_-_Sphenopteris_tridactylitis.jpg
English: Caption: 1. Sphenopteris tridactylitis. 2. Leaf enlarged.

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Date/TimeThumbnailDimensionsUserComment
current00:28, 29 August 2013Thumbnail for version as of 00:28, 29 August 2013889 × 1,271 (158 KB)Bob Burkhardt{{Information |Description={{en|Illustration of a fossil plant found in coal: ''Sphenopteris tridactylitis''.}} |Source=''The American Cyclopædia'', v. 4, 1879, p. 748. |Date=published 1879 |Author=unknown artist |Permission={{PD-1923}} |other_versio...

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