Wikimedi'Òc

Pyritized charcoal in weathered coal (Bedford Coal, Middle Pennsylvanian; Noland Tunnel's north portal outcrop, Tunnel Hill, Coshocton County, Ohio, USA) 3 (31066115664).jpg - Ser Amantio di Nicolao

Lower Mercer Limestone over Middle Mercer Coal (Middle Pennsylvanian; Rock Cut railroad cut, south-southeast of Dresden, Ohio, USA) 1 (32501507994).jpg - Ser Amantio di Nicolao

Sandstone (Sharon Formation, Lower Pennsylvanian; Virginia Kendall Ledges, Ohio, USA) 5 (31448427668).jpg - Ser Amantio di Nicolao

Pottsville Group (Pennsylvanian; Dupler Pit, East Fultonham, Muskingum County, Ohio, USA) 10 (44302997024).jpg - Ser Amantio di Nicolao

Pottsville Group (Middle Pennsylvanian; Frazeysburg Pit, Muskingum County, Ohio, USA) 13 (28407334868).jpg - Ser Amantio di Nicolao

Composita cf. Composita subtilita fossil brachiopod (Boggs Shale, Pottsville Group, Pennsylvanian; Blunt Run, Muskingum County, Ohio, USA) 2.jpg - Ser Amantio di Nicolao

Fig 3 Stylized Geologic Column.jpg - Chris Light

Bituminous coal (Lower Mercer Coal, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 4.jpg - Ser Amantio di Nicolao