TaxNo: 5918Genus Protosageceras
| Suborder: |
Prolecanitina
|
| Superfamily: |
Medlicottioidea
|
| Family: |
Medlicottiidae
|
| Subfamily: |
Episageceratinae
|
| Genus: | Protosageceras |
| Qualifier: | gy |
| Author: |
Popov 1961,p.10
|
| Valid: | Episageceras Noetling,1904,p.363 |
| Lower Boundary: |
PAK Chhidru Fm. base, 260.4 million years
|
| Upper Boundary: |
Griesbachian--Dienerian [GRI--DIE], 250.3 million years
|