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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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Prionoceratidae 
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Subfamily:
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Prionoceratinae 
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| 
Genus:
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Paragattendorfia 
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| 
Species:
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globoidalis | 
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Qualifier:
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ss | 
| 
Author:
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	Ruan 1981,p.77	 
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| 
Lower Boundary:
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Devonian--Carboniferous Boundary   [DCB], 359.2 million years
 
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| 
Upper Boundary:
 | 
low.Tournais.--mid.Tournais.  [Tn1--Tn2], 357.5 million years
 
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