Suborder:
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Goniatitina
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Superfamily:
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Neoglyphioceratoidea
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Family:
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Cravenoceratidae
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Subfamily:
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Cravenoceratinae
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Genus:
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Caenolyroceras |
Qualifier:
|
ge |
Author:
|
Ruzhencev & Bog. 1971,p.277
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Lower Boundary:
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RUS Nm1a1--Nm1a2 (P.cloudi--Do.miranda), 327.4 million years
|
Upper Boundary:
|
RUS Nm1b2--Nm1c1,Fayettevillea-Delepinoc, 324 million years
|