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Suborder:
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Clymeniina 
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Superfamily:
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Clymenioidea 
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Family:
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Clymeniidae 
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Genus:
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Protoxyclymenia 
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Subgenus:
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Protoxyclymenia 
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Species:
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primaeva | 
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Qualifier:
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ss | 
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Author:
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	Czarnocki 1989,p.70	 
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Lower Boundary:
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UD4A--UD4B: dunkeri Zone base    [15,55], 366.8 million years
 
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Upper Boundary:
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UD4B--UD4C: serpentina Zone base [16,45], 366.4 million years
 
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