TaxNo: 5371Genus Mexicoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Cyclolobidae
|
| Subfamily: |
Kufengoceratinae
|
| Genus: | Mexicoceras |
| Qualifier: | ge |
| Author: |
Ruzhencev 1955,p.701
|
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
lower Capitanian--upper Capitanian, 263 million years
|