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Suborder:
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Tornoceratina
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Superfamily:
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Dimeroceratoidea
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Family:
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Cheiloceratidae
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Genus:
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Balacheiloceras |
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Qualifier:
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gn |
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Author:
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Korn & Klug 2002,p.180
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Valid:
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Torleyoceras ? Wedekind TAX5809 |
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Lower Boundary:
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UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
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Upper Boundary:
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UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
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