TaxNo: 7271Beyrichoceras merzougense
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Maxigoniatitidae
|
| Genus: |
Beyrichoceras
|
| Species: | merzougense |
| Qualifier: | ss |
| Author: |
Korn et al. 2007, p.142
|
| Lower Boundary: |
Up.Visean Goniatites BZ base [up.VIS], 333.5 million years
|
| Upper Boundary: |
DER Goniatites hudsoni base[GBY:B1--B2a], 333.3 million years
|