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Suborder:
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Anarcestina
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Superfamily:
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Triainoceratoidea
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Family:
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Maenioceratidae
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Genus:
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Maenioceras
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Subgenus:
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Maenioceras |
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Qualifier:
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gy |
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Author:
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Schindewolf 1933,p.104
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Valid:
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Maenioceras Schindewolf,1933,p.104 |
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Lower Boundary:
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ensensis--hemiansatus Zone [08,20], 391.8 million years
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Upper Boundary:
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mid.--up.varcus Zone [17,00], 389 million years
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