Suborder:
|
Goniatitina
|
Superfamily:
|
Dimorphoceratoidea
|
Family:
|
Berkhoceratidae
|
Genus:
|
Kazakhoceras?
|
Species:
|
armstrongi |
Qualifier:
|
ss |
Author:
|
Currie 1954,p.593
|
Lower Boundary:
|
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|
Upper Boundary:
|
Pendleian--Arnsbergian [PND--ARN], 324 million years
|