TaxNo: 267Rhiphaeocyclus mutabilis+
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Pericyclinae
|
| Genus: |
Rhiphaeocyclus
|
| Species: | mutabilis+ |
| Qualifier: | ss |
| Author: |
Kuzina 1973,p.23
|
| Lower Boundary: |
RUN Kos'vinskii gorizont base, 349 million years
|
| Upper Boundary: |
RUN Kos'vinskii--Nortnichskii, 340 million years
|