Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
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Glaphyritidae
|
Subfamily:
|
Glaphyritinae
|
Genus:
|
Richardsonites
|
Species:
|
sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
|
UAR basal--lower shale of Fayetteville, 327 million years
|
Upper Boundary:
|
UAR lower shale--Wedington/Fayetteville, 326.4 million years
|