Wikimedi'Òc

Limestone etched section KopeFm new.jpg - BotMultichillT

Columbus LS etched KellysIsland.jpg - Jstuby

Kelley's Island limestone - Cleveland Museum of Natural History - 2014-12-26 (20915980068).jpg - CallyMc

Possible mudcracks capping nonmarine limestone (Nineveh Limestone, Greene Formation, Lower Permian; Clark Hill section, Long Ridge, Monroe County, Ohio, USA) 1 (29757881805).jpg - Ser Amantio di Nicolao

Fossiliferous dismicrite (Nineveh Limestone, Lower Permian; Clark Hill section, Long Ridge, Monroe County, Ohio, USA) 2 (30635705744).jpg - Ser Amantio di Nicolao

Glacially smoothed, faceted, & striated limestone pebble from Pleistocene glacial till (Granville, Ohio, USA) 2 (31253357661).jpg - Ser Amantio di Nicolao

Glacially smoothed, faceted, & striated limestone pebble from Pleistocene glacial till (Granville, Ohio, USA) 1 (31224192562).jpg - Ser Amantio di Nicolao

Zygospira brachiopods in fossiliferous limestone (Point Pleasant Limestone, Upper Ordovician; Bear Creek Quarry, east of Neville, Ohio, USA) 1.jpg - Ser Amantio di Nicolao

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

Fishpot Limestone (Upper Pennsylvanian; Pipe Creek Road outcrop, Belmont County, Ohio, USA) 3.jpg - Ser Amantio di Nicolao

Fishpot Limestone (Upper Pennsylvanian; Pipe Creek Road outcrop, Belmont County, Ohio, USA) 6.jpg - Ser Amantio di Nicolao

Fishpot Limestone (Upper Pennsylvanian; Pipe Creek Road outcrop, Belmont County, Ohio, USA) 4.jpg - Ser Amantio di Nicolao

Fishpot Limestone (Upper Pennsylvanian; Pipe Creek Road outcrop, Belmont County, Ohio, USA) 7.jpg - Ser Amantio di Nicolao

Fishpot Limestone (Upper Pennsylvanian; Pipe Creek Road outcrop, Belmont County, Ohio, USA) 9.jpg - Ser Amantio di Nicolao

Geography of Ohio - DPLA - aaba7b3295ff6973b6fd1e23e33cde14 (page 96) (cropped).jpg - Johndewees