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Suborder:
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Goniatitina
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Superfamily:
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Cycloloboidea
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Family:
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Cyclolobidae
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Subfamily:
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Kufengoceratinae
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Genus:
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Paramexicoceras
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Species:
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sp.nov. |
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Qualifier:
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of |
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Author:
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Nassichuk 1995,p.230
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Lower Boundary:
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Wuchiapingian--Changhsingian [DZH--CHX], 253.8 million years
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Upper Boundary:
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Permian--Triassic (Induan base), 251 million years
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