TaxNo: 3005Genus Balvia
| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: | Balvia |
| Qualifier: | ge |
| Author: |
Lange 1929,p.60
|
| Lower Boundary: |
UD6A2--UD6B:Balvia(M.) lens base [18,20], 363.2 million years
|
| Upper Boundary: |
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|