TaxNo: 2182Beyrichoceras sp.B
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Maxigoniatitidae
|
| Genus: |
Beyrichoceras
|
| Species: | sp.B |
| Qualifier: | of |
| Author: |
Moore 1936,p.180
|
| Lower Boundary: |
DER Go alpha 1--Go alpha 2 [11.00], 333 million years
|
| Upper Boundary: |
DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
|