Suborder:
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Goniatitina
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Superfamily:
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Dimorphoceratoidea
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Family:
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Girtyoceratidae
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Subfamily:
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Girtyoceratinae
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Genus:
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Eumorphoceras
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Species:
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bisulcatum aff. |
Qualifier:
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af |
Author:
|
Ruzhencev & Bog. 1971,p.184
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Lower Boundary:
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RUS Nm1c1--Nm1c2(uralicus--Del.bressoni), 322 million years
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Upper Boundary:
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RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|