TaxNo: 5829Family Sporadoceratidae
| Suborder: |
Tornoceratina
|
| Superfamily: |
Praeglyphioceratoidea
|
| Family: | Sporadoceratidae |
| Qualifier: | fa |
| Author: |
Miller & Furnish 1957,p.L49
|
| Lower Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
| Upper Boundary: |
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|