TaxNo: 5075Prostacheoceras geminum
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Vidrioceratidae
|
| Genus: |
Prostacheoceras
|
| Species: | geminum |
| Qualifier: | sy |
| Author: |
Ruzhencev 1938,p.258
|
| Valid: | Prostacheoceras juresanense (Maks. 1938) |
| Lower Boundary: |
Gzhelian--Asselian [C--P], 299 million years
|
| Upper Boundary: |
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|