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Dolostone (Put-in-Bay Dolomite, Upper Silurian; South Bass Island, Lake Erie, Ohio, USA) 4 (48541323572).jpg - Ser Amantio di Nicolao
Argillaceous beds (Tymochtee Dolomite, Upper Silurian; South Bass Island, Lake Erie, Ohio, USA) 1 (48627854858).jpg - Ser Amantio di Nicolao
Argillaceous beds (Tymochtee Dolomite, Upper Silurian; South Bass Island, Lake Erie, Ohio, USA) 2 (48628206381).jpg - Ser Amantio di Nicolao
Argillaceous beds (Tymochtee Dolomite, Upper Silurian; South Bass Island, Lake Erie, Ohio, USA) 3 (48628357507).jpg - Ser Amantio di Nicolao
Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 1 (30751281370).jpg - Ser Amantio di Nicolao
Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 4 (30298008754).jpg - Ser Amantio di Nicolao
Quartzose sandstone (Black Hand Sandstone, Lower Mississippian; Black Hand Gorge, Ohio, USA) 6 (30975837842).jpg - Ser Amantio di Nicolao
Meigs Creek Coal (a.k.a. Sewickley Coal) (Monongahela Group, Upper Pennsylvanian; Narrows Run North Rt. 7 roadcut, Belmont County, Ohio, USA) 1.jpg - Ser Amantio di Nicolao
Flint with weathering spherulites (Vanport Flint, Middle Pennsylvanian; Nethers Flint Quarries, Flint Ridge, Ohio, USA) 3.jpg - Ser Amantio di Nicolao
Broken sidewalk from tree root growth (Columbus, Ohio, USA) 1.jpg - Ser Amantio di Nicolao
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