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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. | 
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Qualifier:
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of | 
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Author:
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	Foord & Crick 1897,p.142	 
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| 
Lower Boundary:
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mid.Tournais.--up.Tournaisian [Tn2--Tn3], 353 million years
 
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| 
Upper Boundary:
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Tournaisian--Visean           [TOU--VIS], 345.3 million years
 
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