TaxNo: 6541Genus Calygirtyoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: | Calygirtyoceras |
| Qualifier: | ge |
| Author: |
Korn, Klug & Mapes 1999,p.353
|
| Lower Boundary: |
Bollandoc./Bollandit.--Beyrichoceras BZ, 334.5 million years
|
| Upper Boundary: |
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|