TaxNo: 1844Cheiloceras praepolonicum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Dimeroceratoidea
|
| Family: |
Cheiloceratidae
|
| Genus: |
Cheiloceras
|
| Species: | praepolonicum |
| Qualifier: | sy |
| Author: |
Sobolev 1914,p.35
|
| Valid: | Cheiloceras glabrum (S.) |
| Lower Boundary: |
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
| Upper Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|