TaxNo: 5135Genus Rotaraxoceras
| Suborder: |
Otoceratina
|
| Family: |
Araxoceratidae
|
| Subfamily: |
Araxoceratinae
|
| Genus: | Rotaraxoceras |
| Qualifier: | gy |
| Author: |
Ruzhencev 1959,p.61
|
| Valid: |
Araxoceras Ruzhentsev [TAX5134] |
| Lower Boundary: |
AZB base Araxoceras beds, 260.4 million years
|
| Upper Boundary: |
AZB Vedioceras--Phisonites beds, 253.8 million years
|