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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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Christioceratidae
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Genus:
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Christioceras
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Species:
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domokhotovi |
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Qualifier:
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ss |
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Author:
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Popov 1970,p.136
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Lower Boundary:
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U Morrowan (Bloydian)--Atokan[MOR--ATO], 310.4 million years
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Upper Boundary:
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UAR Lower--Upper Atoka Fm., 309.2 million years
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