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File:Tetragraptus approximatus 1.png

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Summary

Description
English: Tetragraptus approximatus. Top: fragment of one of the stypes, magnified. Bottom: Nearly perfect specimen.
Date
Source Henry Alleyne Nicholson (1873). "On some Fossils from the Quebec Group of Point Lévis, Quebec". The Annals and Magazine of Natural History, including Zoology, Botany, and Geology. 4th Series 11: 133–143.
Author Henry Alleyne Nicholson

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Tetragraptus approximatus

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Tetragraptus approximatus

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Date/TimeThumbnailDimensionsUserComment
current23:49, 29 November 2012Thumbnail for version as of 23:49, 29 November 2012461 × 206 (81 KB)Obsidian SoulUser created page with UploadWizard

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