TaxNo: 6022Genus Zephyroceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Glaphyritidae
|
| Subfamily: |
Fayettevilleinae
|
| Genus: | Zephyroceras |
| Qualifier: | ge |
| Author: |
Kullmann 1962,p.314
|
| Lower Boundary: |
ESC Grey Marl Alba Fm. base, 324 million years
|
| Upper Boundary: |
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|