TaxNo: 2537Nuculoceras fragile
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Nuculoceratinae
|
| Genus: |
Nuculoceras
|
| Species: | fragile |
| Qualifier: | sy |
| Author: |
Bisat 1932,p.351
|
| Valid: | Nuculoceras nuculum Bisat 1924 |
| Lower Boundary: |
DER E2b--E2c(Cravenocerat.--Nuculoceras), 321 million years
|
| Upper Boundary: |
Arnsbergian--Chokierian [ARN--CHO], 319 million years
|