| Suborder: |
Goniatitina
|
| Superfamily: |
Neodimorphoceratoidea
|
| Family: |
Neodimorphoceratidae
|
| Genus: | Politoceras |
| Qualifier: | ge |
| Author: |
Librovitch 1946,p.80
|
| Lower Boundary: |
UMO Cherokee Shale base, 308.6 million years
|
| Upper Boundary: |
UMO Cherokee Shale top, 307.4 million years
|
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