TaxNo: 688Balvia rostrata
| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: |
Balvia
|
| Species: | rostrata |
| Qualifier: | sy |
| Author: |
Selwood 1960,p.171
|
| Valid: |
Balvia biformis TAX675 |
| Lower Boundary: |
UD6C2--UD6D1:parad.--Wo.sphaeroi.[18,90], 361.6 million years
|
| Upper Boundary: |
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|