Suborder:
|
Goniatitina
|
Superfamily:
|
Thalassoceratoidea
|
Family:
|
Bisatoceratidae |
Qualifier:
|
fa |
Author:
|
Miller & Furnish 1957,p.L60
|
Lower Boundary:
|
U Chesterian--Halian [MIS--PEN], 318.1 million years
|
Upper Boundary:
|
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|