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Suborder:
 | 
Tornoceratina 
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| 
Superfamily:
 | 
Karagandoceratoidea 
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| 
Family:
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Prodromitidae 
 | 
| 
Genus:
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Prodromites 
 | 
| 
Species:
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gorbyi+ | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Miller 1891,p.90	 
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| 
Lower Boundary:
 | 
UMO Chouteau Lst. base, 354 million years
 
 | 
| 
Upper Boundary:
 | 
UIN Rockford Lst.  + low.Nancy Mb. top, 352 million years
 
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