TaxNo: 2522Eumorphoceras bisulcatum mut. beta
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Eumorphoceras
|
| Species: | bisulcatum mut. beta |
| Qualifier: | sy |
| Author: |
Schmidt 1934,p.451
|
| Valid: | Eumorphoceras beta Riley 1987 |
| Lower Boundary: |
DER E2b--E2c(Cravenocerat.--Nuculoceras), 321 million years
|
| Upper Boundary: |
Arnsbergian--Chokierian [ARN--CHO], 319 million years
|