TaxNo: 6418Proptychitoides trigonalis
| Suborder: |
Otoceratina
|
| Family: |
Proptychitidae
|
| Genus: |
Proptychitoides
|
| Species: | trigonalis |
| Qualifier: | ss |
| Author: |
Arthaber 1908
|
| Lower Boundary: |
Permian--Triassic (Induan base), 251 million years
|
| Upper Boundary: |
Olenekian--Anisian (top Spathian), 245 million years
|