TaxNo: 435Polaricyclus ballardensis
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: |
Polaricyclus
|
| Species: | ballardensis |
| Qualifier: | ss |
| Author: |
Gordon 1965,p.174
|
| Lower Boundary: |
UMO St.Joe Limestone base, 349 million years
|
| Upper Boundary: |
UMO St.Joe Limestone-Reeds Spring Chert, 347 million years
|