| 
Suborder:
 | 
Goniatitina 
 | 
| 
Superfamily:
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Nomismoceratoidea 
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| 
Family:
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Nomismoceratidae 
 | 
| 
Genus:
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Nomismoceras 
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| 
Species:
 | 
marshallense | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Gordon 1965,p.248	 
 | 
| 
Lower Boundary:
 | 
UAR basal--lower shale of Fayetteville, 327 million years
 
 | 
| 
Upper Boundary:
 | 
UAR lower shale--Wedington/Fayetteville, 326.4 million years
 
 |