|
Suborder:
|
Tornoceratina
|
|
Superfamily:
|
Karagandoceratoidea
|
|
Family:
|
Prodromitidae
|
|
Genus:
|
Asidoceras |
|
Qualifier:
|
ge |
|
Author:
|
Ruzhencev 1975,p.37
|
|
Lower Boundary:
|
Devonian--Carboniferous Boundary [DCB], 359.2 million years
|
|
Upper Boundary:
|
Up.Visean Goniatites BZ base [up.VIS], 333.5 million years
|