TaxNo: 6217Gastrioceras stenumbilicatum
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: |
Gastrioceras
|
| Species: | stenumbilicatum |
| Qualifier: | ss |
| Author: |
Ruan & Zhou 1987,p.143
|
| Lower Boundary: |
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
|
| Upper Boundary: |
RUS Branner./Gastr.--Diabol./Winslow. GZ, 311.7 million years
|