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Mississippian-Pennsylvanian unconformity ("Sharon" Conglomerate over Logan Formation; Jackson North roadcut, Ohio, USA) 1 (37494733582).jpg - Ser Amantio di Nicolao
Mississippian-Pennsylvanian unconformity ("Sharon" Conglomerate over Logan Formation; Jackson North roadcut, Ohio, USA) 19 (36815941814).jpg - Ser Amantio di Nicolao
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