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Suborder:
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Goniatitina
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Superfamily:
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Schistoceratoidea
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Family:
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Schistoceratidae
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Genus:
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Mezorulganites |
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Qualifier:
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gy |
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Author:
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Andrianov 1985,p.27
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Valid:
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Yakutoceras Popov,1965,p.70 |
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Lower Boundary:
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RUS Branner./Gastr.--Diabol./Winslow. GZ, 311.7 million years
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Upper Boundary:
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Diabol./Winsl--Paralego./Eowellerites GZ, 309.5 million years
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