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Suborder:
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Goniatitina 
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Superfamily:
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Goniatitoidea 
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Family:
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Goniatitidae 
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Genus:
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Goniatites 
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Species:
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olysya | 
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Qualifier:
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ss | 
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Author:
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	Korn 2001,p.228	 
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Lower Boundary:
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DER Go beta falcatus--Go beta gracilis, 329.1 million years
 
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Upper Boundary:
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DER Go gamma 1-2,liethens.base,P2c base, 327.8 million years
 
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