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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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Kornia | 
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Qualifier:
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ge | 
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Author:
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	Ebbighausen & Bockwinkel 2007,p.143	 
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| 
Lower Boundary:
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DER Ps. westfalicus--Paragattend. patens, 358 million years
 
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| 
Upper Boundary:
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low.Tournais.--mid.Tournais.  [Tn1--Tn2], 357.5 million years
 
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