Suborder:
|
Goniatitina
|
Superfamily:
|
Neoglyphioceratoidea
|
Family:
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Cravenoceratidae
|
Subfamily:
|
Cravenoceratinae
|
Genus:
|
Cravenoceras
|
Species:
|
fayettevillae |
Qualifier:
|
ss |
Author:
|
Gordon 1965,p.207
|
Lower Boundary:
|
UAR basal--lower shale of Fayetteville, 327 million years
|
Upper Boundary:
|
UAR upper Fayetteville--lower Pitkin, 324.3 million years
|