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Suborder:
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Goniatitina
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Superfamily:
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Schistoceratoidea
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Family:
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Aqishanoceratidae |
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Qualifier:
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fy |
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Author:
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Wang 1981,p.472
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Valid:
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Welleritidae Plummer & Scott TAX5197 |
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Lower Boundary:
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RUS Nm2b3--Nm2c1,Bilinguites-Cancelloc.G, 314.8 million years
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Upper Boundary:
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UOK Wewoka Fm. top, 307.1 million years
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