Suborder:
|
Goniatitina
|
Superfamily:
|
Gastrioceratoidea
|
Family:
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Glaphyritidae
|
Subfamily:
|
Glaphyritinae
|
Genus:
|
Glaphyrites
|
Species:
|
illinoisensis |
Qualifier:
|
ss |
Author:
|
Miller & Gurley 1896,p.42
|
Lower Boundary:
|
UAR Winslow Fm.--low. Atoka Fm., 309.5 million years
|
Upper Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|