Wikimedi'Òc

Ironstone nodule horizon above the Lower Mercer Limestone (Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 3 (32441814763).jpg - Ser Amantio di Nicolao

Ironstone nodule horizon above the Lower Mercer Limestone (Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 2 (33100555562).jpg - Ser Amantio di Nicolao

Ironstone nodule horizon above the Lower Mercer Limestone (Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 1 (32412849924).jpg - Ser Amantio di Nicolao

Ironstone nodule conglomerate (Massillon Sandstone, Lower Pennsylvanian; Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 1 (34329561091).jpg - Ser Amantio di Nicolao

Ironstone nodule conglomerate (Massillon Sandstone, Lower Pennsylvanian; Rt. 16 roadcut northeast of Frazeysburg, Ohio, USA) 2 (33617716724).jpg - Ser Amantio di Nicolao