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Suborder:
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Goniatitina 
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| 
Superfamily:
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Gastrioceratoidea 
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Family:
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Glaphyritidae 
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Subfamily:
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Fayettevilleinae 
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| 
Genus:
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Zidadarites | 
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Qualifier:
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ge | 
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Author:
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	Nikolaeva 1997,p.232	 
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| 
Lower Boundary:
 | 
GBY E2a3--E2b1(Eu.yatesae--Cr.edalensis), 322.5 million years
 
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| 
Upper Boundary:
 | 
UAR Imo Formation top, 318.1 million years
 
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