TaxNo: 2605Eumorphoceras bisulcatum grassingtonense
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Eumorphoceras
|
| NomSpecies: |
bisulcatum
|
| Species: | grassingtonense |
| Qualifier: | ss |
| Author: |
Dunham & Stubblefield 1944,p.258
|
| Lower Boundary: |
GBY E1c--E2a1 (Crav.malham.--cowling.), 324 million years
|
| Upper Boundary: |
GBY E2a1--E2a2 (cowlingense--bisulcatum), 323.5 million years
|