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Suborder:
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Goniatitina 
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| 
Superfamily:
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Dimorphoceratoidea 
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| 
Family:
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Girtyoceratidae 
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| 
Subfamily:
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Sudeticeratinae 
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| 
Genus:
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Sudeticeras 
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Species:
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ostraviense | 
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Qualifier:
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ss | 
| 
Author:
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	Patteisky 1936,p.8	 
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| 
Lower Boundary:
 | 
DER lowest E1--E1 alpha, 326 million years
 
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| 
Upper Boundary:
 | 
Pendleian--Arnsbergian        [PND--ARN], 324 million years
 
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