TaxNo: 4563Prototoceras tropitum+
| Suborder: |
Otoceratina
|
| Family: |
Araxoceratidae
|
| Subfamily: |
Araxoceratinae
|
| Genus: |
Prototoceras
|
| Species: | tropitum+ |
| Qualifier: | ss |
| Author: |
Abich 1878,p.13
|
| Lower Boundary: |
Capitanian--Wuchiapingian [CAP--DZH], 260.4 million years
|
| Upper Boundary: |
AZB Vedioceras--Phisonites beds, 253.8 million years
|