TaxNo: 5458Bamyaniceras spatiosum
| Suborder: |
Prolecanitina
|
| Superfamily: |
Medlicottioidea
|
| Family: |
Medlicottiidae
|
| Subfamily: |
Propinacoceratinae
|
| Genus: |
Bamyaniceras
|
| Species: | spatiosum |
| Qualifier: | ss |
| Author: |
Leonova 1992,p.135
|
| Lower Boundary: |
Sygar Fm.--Chelamchin Fm., 275.6 million years
|
| Upper Boundary: |
Chelamchin Fm. top, 270.6 million years
|