TaxNo: 7033Calygirtyoceras zrigatense
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Calygirtyoceras
|
| Species: | zrigatense |
| Qualifier: | ss |
| Author: |
Korn & Ebbighausen in Klug et al. 2006,p.16
|
| Lower Boundary: |
Bollandoc./Bollandit.--Beyrichoceras BZ, 334.5 million years
|
| Upper Boundary: |
Up.Visean Goniatites BZ base [up.VIS], 333.5 million years
|