Suborder:
|
Goniatitina
|
Superfamily:
|
Nomismoceratoidea
|
Family:
|
Nomismoceratidae
|
Genus:
|
Nomismoceras
|
Species:
|
marshallense |
Qualifier:
|
ss |
Author:
|
Gordon 1965,p.248
|
Lower Boundary:
|
UAR basal--lower shale of Fayetteville, 327 million years
|
Upper Boundary:
|
UAR lower shale--Wedington/Fayetteville, 326.4 million years
|