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Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 32 (42068547722).jpg - Ser Amantio di Nicolao
Fossiliferous limestone (Columbus Limestone, Middle Devonian; Sullivant Quarry, Columbus, Ohio, USA) 56 (42068791572).jpg - Ser Amantio di Nicolao
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