TaxNo: 4729Gastrioceras attenuatum
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Gastrioceratidae
|
| Genus: |
Gastrioceras
|
| Species: | attenuatum |
| Qualifier: | ss |
| Author: |
McCaleb 1968,p.43
|
| Lower Boundary: |
UAR Woolsey--Dye Shale, "caprock", 311.7 million years
|
| Upper Boundary: |
UAR Dye Shale--Kessler lmst., 311.3 million years
|