TaxNo: 4541Prototoceras discoidale
| Suborder: |
Otoceratina
|
| Family: |
Araxoceratidae
|
| Subfamily: |
Araxoceratinae
|
| Genus: |
Prototoceras
|
| Species: | discoidale |
| Qualifier: | ss |
| Author: |
Ruzhencev 1963,p.58
|
| Lower Boundary: |
Capitanian--Wuchiapingian [CAP--DZH], 260.4 million years
|
| Upper Boundary: |
AZB Araxoceras--Vedioceras beds, 256 million years
|