TaxNo: 352Pericyclus ryckholti
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: |
Pericyclus
|
| Species: | ryckholti |
| Qualifier: | ss |
| Author: |
Koninck 1880,p.100
|
| Lower Boundary: |
BEL Vaulx-Calonne, 350 million years
|
| Upper Boundary: |
BEL Calonne top--Fac. Wauls. base, 349 million years
|