Suborder:
|
Goniatitina
|
Superfamily:
|
Cycloloboidea
|
Family:
|
Kufengoceratidae |
Qualifier:
|
fy |
Author:
|
Zhao 1980,p.79
|
Valid:
|
Cyclolobidae (Kufengoceratinae) Zhao |
Lower Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
Upper Boundary:
|
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|