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Suborder:
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Anarcestina
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Superfamily:
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Triainoceratoidea
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Family:
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Pharciceratidae
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Genus:
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Pharciceras
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Species:
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triphyllum |
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Qualifier:
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ss |
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Author:
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Frech 1888,p.30
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Lower Boundary:
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mid.--up.varcus Zone [17,00], 389 million years
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Upper Boundary:
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Givetian--Frasnian [GIV--FRS], 385.3 million years
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