TaxNo: 6457Cravenoceras berkhi
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Cravenoceras
|
| Species: | berkhi |
| Qualifier: | ss |
| Author: |
Librovitch 1962, pl. 21
|
| Lower Boundary: |
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|
| Upper Boundary: |
Pendleian--Arnsbergian [PND--ARN], 324 million years
|