| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: |
Balvia
|
| Subgenus: | Kenseyoceras |
| Qualifier: | gy |
| Author: |
Selwood 1960,p.171
|
| Valid: |
Balvia Lange,1929 [TAX3005] |
| Lower Boundary: |
UD6B--UD6C1 Kamptoclym. endogona base, 362.4 million years
|
| Upper Boundary: |
UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years
|
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