TaxNo: 1894Cheiloceras simplicissimum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Dimeroceratoidea
|
| Family: |
Cheiloceratidae
|
| Genus: |
Cheiloceras
|
| Species: | simplicissimum |
| Qualifier: | sy |
| Author: |
Sobolev 1914,p.44
|
| Valid: | Cheiloceras undulatum planilobum |
| Lower Boundary: |
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
| Upper Boundary: |
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|