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Suborder:
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Goniatitina
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Superfamily:
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Neoicoceratoidea
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Family:
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Metalegoceratidae
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Subfamily:
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Epiglyphioceratinae |
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Qualifier:
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fy |
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Author:
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Zakharov 1983,p.152
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Valid:
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Metalegoceratidae (Eothinitinae) |
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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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Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
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