TaxNo: 6757Polaricyclus bordenensis
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: |
Polaricyclus
|
| Species: | bordenensis |
| Qualifier: | ss |
| Author: |
Work & Manger 2003, p.594
|
| Lower Boundary: |
Pericyclus--Fasciperic./Ammonellips.BZ, 348.5 million years
|
| Upper Boundary: |
UMO Burlington Lst. top, 345.3 million years
|