TaxNo: 5856Genus Spirolegoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoicoceratoidea
|
| Family: |
Metalegoceratidae
|
| Subfamily: |
Spirolegoceratinae
|
| Genus: | Spirolegoceras |
| Qualifier: | ge |
| Author: |
Miller et al. 1957,p.1064
|
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|