TaxNo: 6145Genus Paramexicoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Cyclolobidae
|
| Subfamily: |
Kufengoceratinae
|
| Genus: | Paramexicoceras |
| Qualifier: | ge |
| Author: |
Popov 1970,p.139
|
| Lower Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|
| Upper Boundary: |
Wuchiapingian--Changhsingian [DZH--CHX], 253.8 million years
|