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Suborder:
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Goniatitina
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Superfamily:
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Popanoceratoidea
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Family:
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Popanoceratidae
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Genus:
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Propopanoceras
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Species:
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sp. |
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Qualifier:
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in |
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Author:
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div. authors
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Lower Boundary:
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Tastubian--Sterlitamakian [TAS--STE], 290 million years
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Upper Boundary:
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Sakmarian--Artinskian [SAK--ART], 284.4 million years
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