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Original file (4,309 × 3,293 pixels, file size: 10.05 MB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:56, 11 October 2022 | 4,309 × 3,293 (10.05 MB) | Jstuby | Uploaded a work by USGS from [https://library.usgs.gov/photo/#/item/51dc250ee4b0f81004b78f5e butc1162], Layers of Warrior limestone composed of cryptozoon undulatum Bassler, five layers of cryptozoons in about 3 feet of thickness; quarry at Bakers Summit in the southwestern part of the Holidaysburg quadrangle, looking southeast. Bedford County, Pennsylvania. 1924. with UploadWizard |
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