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Suborder:
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Goniatitina
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Superfamily:
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Neodimorphoceratoidea
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Family:
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Ramositidae
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Genus:
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Homoceratoides
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Species:
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xinjiangensis |
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Qualifier:
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sn |
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Author:
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Wang 1983,p.526
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Lower Boundary:
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GBY H2c--R1(prereticul.--Ho.magistrorum), 317 million years
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Upper Boundary:
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RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
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