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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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Qualifier:
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ge | 
| 
Author:
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	Hyatt 1884,p.330	 
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| 
Lower Boundary:
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Up.Visean  Goniatites BZ base [up.VIS], 333.5 million years
 
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| 
Upper Boundary:
 | 
UAR lower shale--Wedington/Fayetteville, 326.4 million years
 
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