TaxNo: 5220Genus Aristoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Thalassoceratoidea
|
| Family: |
Thalassoceratidae
|
| Subfamily: |
Thalassoceratinae
|
| Genus: | Aristoceras |
| Qualifier: | ge |
| Author: |
Ruzhencev 1950,p.524
|
| Lower Boundary: |
RUS lower--upper Zhigulian, 305.9 million years
|
| Upper Boundary: |
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|