TaxNo: 5474Prostacheoceras darvasicum
| Suborder: |
Goniatitina
|
| Superfamily: |
Cycloloboidea
|
| Family: |
Vidrioceratidae
|
| Genus: |
Prostacheoceras
|
| Species: | darvasicum |
| Qualifier: | ss |
| Author: |
Leonova 1992,p.165
|
| Lower Boundary: |
Sygar Fm.--Chelamchin Fm., 275.6 million years
|
| Upper Boundary: |
Chelamchin Fm. top, 270.6 million years
|