Wikimedi'Òc

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 10 (41375570394).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 36 (27244106167).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 84 (41229097505).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 87 (41409977304).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 88 (40323076400).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 92 (28257622578).jpg - Ser Amantio di Nicolao

Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 94 (28257601148).jpg - Ser Amantio di Nicolao