TaxNo: 2765Beyrichoceras crenistriatoide
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Maxigoniatitidae
|
| Genus: |
Beyrichoceras
|
| Species: | crenistriatoide |
| Qualifier: | ss |
| Author: |
Kullmann 1962,p.82
|
| Lower Boundary: |
DER Pe delta, nasutus Z. base [09.25], 334.5 million years
|
| Upper Boundary: |
DER Goniatites hudsoni base[GBY:B1--B2a], 333.3 million years
|