Suborder:
|
Goniatitina
|
Superfamily:
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Gastrioceratoidea
|
Family:
|
Glaphyritidae
|
Subfamily:
|
Glaphyritinae
|
Genus:
|
Syngastrioceras
|
Species:
|
suborientale aff. |
Qualifier:
|
af |
Author:
|
Nishida 1971,p.8
|
Lower Boundary:
|
Langsettian--Duckmantian, Westphal.A--B, 311.3 million years
|
Upper Boundary:
|
UAR Lower--Upper Atoka Fm., 309.2 million years
|