| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Cousteauceras
|
| Species: | rota |
| Qualifier: | sy |
| Author: |
Yates 1961,p.57
|
| Valid: | Cousteauceras involutum (Horn 1960) |
| Lower Boundary: |
Visean--Namurian/Serpukhovian [VIS--NAM], 326.4 million years
|
| Upper Boundary: |
DER lowest E1--E1 alpha, 326 million years
|
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