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Suborder:
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Goniatitina 
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| 
Superfamily:
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Shumarditoidea 
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Family:
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Parashumarditidae 
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Genus:
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Parashumardites 
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Species:
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sellardsi | 
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Qualifier:
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ss | 
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Author:
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	Plummer & Scott 1937,p.302	 
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| 
Lower Boundary:
 | 
UTX middle Gaptank Fm. base, 306.5 million years
 
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| 
Upper Boundary:
 | 
UTX upper-uppermost Gaptank, 300 million years
 
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