Wikimedi'Òc

Lower Mercer Limestone (Middle Pennsylvanian) (Symmes Creek, Mollies Rock Road bridge, Muskingum County, Ohio, USA) 1 (17097163079).jpg - Ser Amantio di Nicolao

Ironstone concretion (lower Pottsville Group, Lower Pennsylvanian; Pleasant Valley Limestone Quarry, Muskingum County, Ohio, USA) 3 (30226086427).jpg - Ser Amantio di Nicolao

Lower Mercer Limestone & Boggs Member (Middle Pennsylvanian; Rock Cut, Muskingum County, Ohio, USA) 2 (23529617358).jpg - Ser Amantio di Nicolao