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DescriptionPlatycerasLoganOhio.jpg English: Platyceras pulcherrimum from the Logan Formation (Mississippian) of Wooster, Ohio. Date 20 October 2010 Source...(2,352 × 1,470 (1.96 MB)) - 21:40, 29 November 2022
concretion; Lower Carboniferous. Platyceras pulcherrimum from the Logan Formation (Mississippian) of Wooster, Ohio. Encrusted hiatus concretion from...(315 × 438 (396 KB)) - 13:51, 4 August 2024
