TaxNo: 6780Genus Xenosporadoceras
| Suborder: |
Tornoceratina
|
| Superfamily: |
Praeglyphioceratoidea
|
| Family: |
Sporadoceratidae
|
| Genus: | Xenosporadoceras |
| Qualifier: | ge |
| Author: |
Korn 2002,p.576
|
| Lower Boundary: |
UD3C--UD4A:(annulata Zone base) [14,90], 367.6 million years
|
| Upper Boundary: |
UD4A--UD4B: dunkeri Zone base [15,55], 366.8 million years
|