TaxNo: 6026Genus Umbetoceras
| Suborder: |
Goniatitina
|
| Superfamily: |
Gastrioceratoidea
|
| Family: |
Homoceratidae
|
| Subfamily: |
Homoceratinae
|
| Genus: | Umbetoceras |
| Qualifier: | ge |
| Author: |
Ruzhencev & Bog. 1971,p.28
|
| Lower Boundary: |
RUS Nm2a2--Nm2b1,Reticuloc.-Bashkortoc.G, 317.2 million years
|
| Upper Boundary: |
RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years
|