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Suborder:
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Goniatitina
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Superfamily:
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Gastrioceratoidea
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Family:
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Reticuloceratidae
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Subfamily:
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Reticuloceratinae
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Genus:
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Reticuloceras
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Species:
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pachygyrum |
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Qualifier:
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sn |
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Author:
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Yang 1987,p.163
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Lower Boundary:
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Serpukhovian--Bashkirian [SPK--BSH], 318.1 million years
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Upper Boundary:
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Bashkirian--Moscovian [BSH--MOS], 311.7 million years
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