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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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Welleritidae
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Subfamily:
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Axinolobinae |
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Qualifier:
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fs |
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Author:
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Ruzhencev 1962,p.388
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Lower Boundary:
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Bashkirian--Moscovian [BSH--MOS], 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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