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File:Thin sections of Salterella conulata Clark Yel00005.jpg

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Description
English: Plate 5 of The Early Cambrian Fossil Salterella conulata Clark in Eastern North America

By Ellis L. Yochelson Contributions to Paleontology, Geological Survey Professional Paper 683-B, 1970 Plate 5 caption:

(Taken in plain transmitted light. All four figures and pl. 4, figs. 1 and 3, are from the same thin section)
Figures 1-4. Thin sections of SaIterella conulata Clark.
1. Part of thin section, a short distance below base of apertural cavity, showing central tube filled with recrystallized calcite, laminated inner deposits, and outer wall. X 100. From the upper part of the Vintage Dolomite in the kiln of a small abandoned quarry, east of the Landis Valley Farm Museum and 1,000 feet south of the intersection of Oregon Pike and Hunsecker Road, Lancaster quadrangle, Pennsylvania ; USGS locality 6021-CO. USNM 166245.
2. Same specimen as figure 1, X 15.
3. Lower part of apertural cavity of same specimen, x 50.
4. Upper part of specimen shown to left on plate 4, figure 3, X 50 magnification.
Date
Source USGS Denver Library Photographic Collection, [1]
Author USGS

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Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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current21:58, 20 July 2023Thumbnail for version as of 21:58, 20 July 20234,180 × 4,687 (1.97 MB)JstubyUploaded a work by USGS from USGS Denver Library Photographic Collection, [https://library.usgs.gov/photo/index.html#/item/6033a7d3d34eb120311725e1] with UploadWizard

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