Suborder:
|
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
|
Genus:
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Sulcogirtyoceras
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Species:
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ornatissimum |
Qualifier:
|
ss |
Author:
|
Miller & Youngquist 1948,p.669
|
Lower Boundary:
|
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|
Upper Boundary:
|
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|