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Suborder:
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Tornoceratina 
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| 
Superfamily:
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Prionoceratoidea 
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| 
Family:
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Pseudarietitidae 
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| 
Subfamily:
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Pseudarietitinae 
 | 
| 
Genus:
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Paprothites 
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| 
Species:
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subquadratus | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Ruan 1981,p.90	 
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| 
Lower Boundary:
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DER Acutimit.acutum--Paproth.dorsoplanus, 358.8 million years
 
 | 
| 
Upper Boundary:
 | 
DER Ps. westfalicus--Paragattend. patens, 358 million years
 
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