Suborder:
|
Goniatitina
|
Superfamily:
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Thalassoceratoidea
|
Family:
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Bisatoceratidae
|
Genus:
|
Bisatoceras |
Qualifier:
|
ge |
Author:
|
Miller & Owen 1937,p.417
|
Lower Boundary:
|
U Chesterian--Halian [MIS--PEN], 318.1 million years
|
Upper Boundary:
|
U Missourian--Virgilian [MIS--VIR], 305 million years
|