TaxNo: 5881Genus Prohyattoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: |
Hyattoceratidae
|
| Genus: | Prohyattoceras |
| Qualifier: | gn |
| Author: |
Oyens 1938,p.1123
|
| Valid: | Eohyattoceras Glenister & Furnish,1987 |
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|