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Suborder:
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Goniatitina
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Superfamily:
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Gonioloboceratoidea
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Family:
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Gonioloboceratidae
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Genus:
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Millerites |
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Qualifier:
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gy |
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Author:
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Cantú Chapa 1997,p.66
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Valid:
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Neocrimites Ruzhentsev [TAX5303 ] |
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Lower Boundary:
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Sakmarian--Artinskian [SAK--ART], 284.4 million years
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Upper Boundary:
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MXC La Colorada beds top, 258 million years
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