TaxNo: 3879Genus Parastacheoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Marathonitoidea
|
| Family: |
Marathonitidae
|
| Genus: | Parastacheoceras |
| Qualifier: | gy |
| Author: |
Ehiro & Misaki 2005,p.9
|
| Valid: |
Stacheoceras Gemmellaro,1885 [TAX3879] |
| Lower Boundary: |
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
| Upper Boundary: |
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|