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Suborder:
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Goniatitina 
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Superfamily:
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Goniatitoidea 
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Family:
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Goniatitidae 
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Genus:
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Hibernicoceras 
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Species:
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hibernicum+ | 
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Qualifier:
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ss | 
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Author:
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	Moore & Hodson 1958,p.87	 
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Lower Boundary:
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DER Go beta gracilis Z.--spirale Z. [13., 328.8 million years
 
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Upper Boundary:
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DER Go spirale--Go beta rotundum, 328.6 million years
 
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