Suborder:
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Goniatitina
|
Superfamily:
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Schistoceratoidea
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Family:
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Schistoceratidae
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Genus:
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Eoschistoceras
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Species:
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sp. |
Qualifier:
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in |
Author:
|
div. authors
|
Lower Boundary:
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RUS Miachkovian--Zhigulian [MYA--ZHI], 306.5 million years
|
Upper Boundary:
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RUS Zhigulian--Orenburgian [Ruzhentsev], 305 million years
|