File:1911 Britannica-Arachnida-Limulus polyphemus8.png
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English: The first three pairs of mesosomatic appendages of Scorpio and Limulus polyphemus compared. VII, The genital operculum. VIII, The pectens of Scorpio and the first branchial plate of Limulus. IX, The first pair of lung-books of Scorpio and the second branchial plate of Limulus. gp, Genital pore. epst, Epistigmatic sclerite. stg, Stigma or orifice of the hollow tendons of the branchial plates of Limulus. (After Ray Lankester, Quart. Journ. Micr. Sci., vol. xxi., 1881.) |
| Date | |
| Source |
 Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 292 |
| Author | Encyclopædia Britannica, 1911 |
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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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| current | 21:07, 9 March 2015 | | 2,400 × 1,659 (534 KB) | Animalparty (talk | contribs) | larger, clearer |
| 01:24, 31 October 2012 |  | 604 × 416 (178 KB) | Clarice Reis (talk | contribs) | User created page with UploadWizard |
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