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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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Imitoceras 
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| 
Species:
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sp. | 
| 
Qualifier:
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in | 
| 
Author:
 | 
	div. authors 	 
 | 
| 
Lower Boundary:
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low.Tournais.--mid.Tournais.  [Tn1--Tn2], 357.5 million years
 
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| 
Upper Boundary:
 | 
Tournaisian--Visean           [TOU--VIS], 345.3 million years
 
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