TaxNo: 909Kirsoceras costatum*
| Suborder: |
Tornoceratina
|
| Superfamily: |
Tornoceratoidea
|
| Family: |
Tornoceratidae
|
| Subfamily: |
Aulatornoceratinae
|
| Genus: |
Kirsoceras
|
| Species: | costatum* |
| Qualifier: | ss |
| Author: |
Perna 1914,p.42
|
| Lower Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
| Upper Boundary: |
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|