TaxNo: 5146Genus Periptychoceras
| Suborder: |
Otoceratina
|
| Family: |
Araxoceratidae
|
| Subfamily: |
Araxoceratinae
|
| Genus: | Periptychoceras |
| Qualifier: | gy |
| Author: |
Zhao et al. 1978,p.97
|
| Valid: |
Anfuceras Zhao, Liang & Zheng [TAX5145] |
| Lower Boundary: |
Anderssonoceras/Prototoceras base, 260.4 million years
|
| Upper Boundary: |
Anderssonoc./Prototoc.--Araxoc./Kongl., 258 million years
|