TaxNo: 2024Girtyoceras araneum
| Suborder: |
Goniatitina
|
| Superfamily: |
Dimorphoceratoidea
|
| Family: |
Girtyoceratidae
|
| Subfamily: |
Girtyoceratinae
|
| Genus: |
Girtyoceras
|
| Species: | araneum |
| Qualifier: | ss |
| Author: |
Nicolaus 1963,p.118
|
| Lower Boundary: |
DER Go alpha 1--Go alpha 2 [11.00], 333 million years
|
| Upper Boundary: |
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|