Suborder:
|
Goniatitina
|
Superfamily:
|
Cycloloboidea
|
Family:
|
Cyclolobidae
|
Subfamily:
|
Kufengoceratinae
|
Genus:
|
Shengoceras |
Qualifier:
|
ge |
Author:
|
Chao 1955,p.141
|
Lower Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
Upper Boundary:
|
Capitanian--Wuchiapingian [CAP--DZH], 260.4 million years
|