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Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 25 (41375776054).jpg - Ser Amantio di Nicolao
Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 26 (42050134202).jpg - Ser Amantio di Nicolao
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