Suborder:
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Goniatitina
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Superfamily:
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Gastrioceratoidea
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Family:
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Reticuloceratidae
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Subfamily:
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Reticuloceratinae
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Genus:
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Agastrioceras
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Species:
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vagum |
Qualifier:
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ss |
Author:
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Nikolaeva 1989,p.111
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Lower Boundary:
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RUS Nm2b3--Nm2c1,Bilinguites-Cancelloc.G, 314.8 million years
|
Upper Boundary:
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RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
|