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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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Qualifier:
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ge | 
| 
Author:
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	Schindewolf 1933,p.104	 
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| 
Lower Boundary:
 | 
ensensis--hemiansatus Zone       [08,20], 391.8 million years
 
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| 
Upper Boundary:
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MAR one alpha 1-- one alpha 2 of Bensaid, 388 million years
 
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