TaxNo: 1965Girtyoceras margaritatum
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Girtyoceras
|
| Species: | margaritatum |
| Qualifier: | ss |
| Author: |
Korn 1988,p.55
|
| Lower Boundary: |
DER rotundum--Go beta suerlandense, 328.4 million years
|
| Upper Boundary: |
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|