TaxNo: 1357Protornoceras simplificatum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Tornoceratoidea
|
| Family: |
Tornoceratidae
|
| Subfamily: |
Aulatornoceratinae
|
| Genus: |
Protornoceras
|
| Species: | simplificatum |
| Qualifier: | ss |
| Author: |
Sobolev 1914,p.64
|
| Lower Boundary: |
UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|
| Upper Boundary: |
UD3B--UD3C:(delphinus Zone base) [14,55], 368 million years
|