TaxNo: 4749Propinacoceras griaense
| Suborder: |
Prolecanitina
|
| Superfamily: |
Medlicottioidea
|
| Family: |
Medlicottiidae
|
| Subfamily: |
Propinacoceratinae
|
| Genus: |
Propinacoceras
|
| Species: | griaense |
| Qualifier: | sy |
| Author: |
Tumanskaia 1949,p.79
|
| Valid: | Propinacoceras baranovi Tumanskaya 1949 |
| Lower Boundary: |
TAP lower--upper Bus-Ter beds, 269.3 million years
|
| Upper Boundary: |
TAP upper Bus--Ter beds top, 268 million years
|