TaxNo: 1978Cousteauceras? involutum
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Cousteauceras?
|
| Species: | involutum |
| Qualifier: | ss |
| Author: |
Horn 1960,p.330
|
| Lower Boundary: |
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|
| Upper Boundary: |
DER lowest E1--E1 alpha, 326 million years
|