TaxNo: 852Prionoceras? richteri
| Suborder: |
Tornoceratina
|
| Superfamily: |
Prionoceratoidea
|
| Family: |
Prionoceratidae
|
| Subfamily: |
Prionoceratinae
|
| Genus: |
Prionoceras?
|
| Species: | richteri |
| Qualifier: | ss |
| Author: |
Schindewolf 1923,p.328
|
| Lower Boundary: |
UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|
| Upper Boundary: |
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|