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Suborder:
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Goniatitina 
 | 
| 
Superfamily:
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Dimorphoceratoidea 
 | 
| 
Family:
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Dimorphoceratidae 
 | 
| 
Subfamily:
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Glyphiolobinae 
 | 
| 
Genus:
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Glyphiolobus 
 | 
| 
Species:
 | 
sp. | 
| 
Qualifier:
 | 
in | 
| 
Author:
 | 
	div. authors 	 
 | 
| 
Lower Boundary:
 | 
DER Go alpha 1--Go alpha 2 [11.00], 333 million years
 
 | 
| 
Upper Boundary:
 | 
DER Go alpha 3--Go alpha 4  [13.00], 332 million years
 
 |