TaxNo: 154Masonoceras rugilobatum
| Suborder: |
Tornoceratina
|
| Superfamily: |
Karagandoceratoidea
|
| Family: |
Karagandoceratidae
|
| Genus: |
Masonoceras
|
| Species: | rugilobatum |
| Qualifier: | ss |
| Author: |
Miller & Collinson 1951,p.467
|
| Lower Boundary: |
UMO Northwiew Shale base, 353 million years
|
| Upper Boundary: |
UMO Northwiew Shale top, 352 million years
|