TaxNo: 5683Genus Gephyroceras
| Suborder: |
Anarcestina
|
| Superfamily: |
Beloceratoidea
|
| Family: |
Gephuroceratidae
|
| Genus: | Gephyroceras |
| Qualifier: | gy |
| Author: |
Hyatt 1885,p.418
|
| Valid: |
Gephuroceras, Manticoceras TAX5682 |
| Lower Boundary: |
UD1B--UD1C:stylioph.--T.kayserl. [01,70], 383.3 million years
|
| Upper Boundary: |
UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|