TaxNo: 6548Cravenoceras subitum
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Cravenoceras
|
| Species: | subitum |
| Qualifier: | ss |
| Author: |
Astachova 1983, p.118
|
| Lower Boundary: |
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|
| Upper Boundary: |
Pendleian--Arnsbergian [PND--ARN], 324 million years
|