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Suborder:
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Goniatitina 
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Superfamily:
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Nomismoceratoidea 
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Family:
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Nomismoceratidae 
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Genus:
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Nomismoceras 
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Species:
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waltoni | 
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Qualifier:
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ss | 
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Author:
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	Bockwinkel, Korn & Ebbighausen 2010	 
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Lower Boundary:
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Holkerian--Asbian [V3a--V3b]  [HLK--ASB], 336.5 million years
 
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| 
Upper Boundary:
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Bollandoc./Bollandit.--Beyrichoceras BZ, 334.5 million years
 
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