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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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Gattendorfiidae 
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Genus:
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Gattendorfia 
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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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	Korn et al. 2002,p.83.	 
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Lower Boundary:
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low.Tournais.--mid.Tournais.  [Tn1--Tn2], 357.5 million years
 
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Upper Boundary:
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UIA Wassonville Fm. top, 353 million years
 
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