TaxNo: 3042Genus Polaricyclus
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: | Polaricyclus |
| Qualifier: | ge |
| Author: |
Riley 1990,p.139
|
| Lower Boundary: |
Pericyclus--Fasciperic./Ammonellips.BZ, 348.5 million years
|
| Upper Boundary: |
IRL Lower Limestone top, 345.3 million years
|