TaxNo: 5531Genus Pennoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Gonioloboceratoidea
|
| Family: |
Wiedeyoceratidae
|
| Genus: | Pennoceras |
| Qualifier: | ge |
| Author: |
Miller & Unklesbay 1942, p.142
|
| Lower Boundary: |
UPA Brush Creek Lst. base, 305 million years
|
| Upper Boundary: |
UPA Brush Creek Lst. top, 299 million years
|