Suborder:
|
Tornoceratina
|
Superfamily:
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Karagandoceratoidea
|
Family:
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Prodromitidae
|
Genus:
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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
|