Suborder:
|
Goniatitina
|
Superfamily:
|
Dimorphoceratoidea
|
Family:
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Girtyoceratidae
|
Subfamily:
|
Girtyoceratinae
|
Genus:
|
Girtyoceras
|
Species:
|
sp.2 |
Qualifier:
|
of |
Author:
|
Korn 1988,p.62
|
Lower Boundary:
|
DER chalic.--up.Go gamma2,Emstit.novalis, 327.2 million years
|
Upper Boundary:
|
DER lowest E1--E1 alpha, 326 million years
|