TaxNo: 5811Genus Praemeroceras
| Suborder: |
Tornoceratina
|
| Superfamily: |
Dimeroceratoidea
|
| Family: |
Dimeroceratidae
|
| Subfamily: |
Dimeroceratinae
|
| Genus: | Praemeroceras |
| Qualifier: | ge |
| Author: |
Becker 1993,p.291
|
| Lower Boundary: |
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
| Upper Boundary: |
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|