TaxNo: 5826Genus Sporadoceras
| Suborder: |
Tornoceratina
|
| Superfamily: |
Praeglyphioceratoidea
|
| Family: |
Sporadoceratidae
|
| Genus: | Sporadoceras |
| Qualifier: | ge |
| Author: |
Hyatt 1884,p.321
|
| Lower Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
| Upper Boundary: |
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|