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Suborder:
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Agoniatitina
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Superfamily:
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Mimoceratoidea
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Family:
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Mimosphinctidae
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Subfamily:
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Anetoceratinae |
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Qualifier:
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fs |
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Author:
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Ruzhencev 1957, p.54
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Lower Boundary:
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LD3B base:Anetocer.Range Z. base [12,10], 406.4 million years
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Upper Boundary:
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CZB elegans--cancellata Zone [14,20], 404 million years
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