TaxNo: 5794Genus Exotornoceras
| Suborder: |
Tornoceratina
|
| Superfamily: |
Tornoceratoidea
|
| Family: |
Posttornoceratidae
|
| Genus: | Exotornoceras |
| Qualifier: | ge |
| Author: |
Becker 1984, p.64
|
| Lower Boundary: |
UD2A--UD2B:(verneuili Zone base) [07,75], 374 million years
|
| Upper Boundary: |
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|