TaxNo: 5684Genus Gastrioceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: | Gastrioceras |
| Qualifier: | ge |
| Author: |
Hyatt 1884,p.327
|
| Lower Boundary: |
RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
|
| Upper Boundary: |
RUS Branner./Gastr.--Diabol./Winslow. GZ, 311.7 million years
|