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Suborder:
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Otoceratina
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Family:
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Araxoceratidae
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Subfamily:
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Araxoceratinae
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Genus:
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Prototoceras
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Species:
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sp. |
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Qualifier:
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in |
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Author:
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div. authors
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Lower Boundary:
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Anderssonoc./Prototoc.--Araxoc./Kongl., 258 million years
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Upper Boundary:
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Sanyangites--Iranites/Phisonites, 253.8 million years
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