TaxNo: 325Helicocyclus gracillimus+
| Suborder: |
Goniatitina
|
| Superfamily: |
Pericycloidea
|
| Family: |
Pericyclidae
|
| Subfamily: |
Ammonellipsitinae
|
| Genus: |
Helicocyclus
|
| Species: | gracillimus+ |
| Qualifier: | ss |
| Author: |
Schindewolf 1951,p.79
|
| Lower Boundary: |
DER Erdbacher Kalk base [05,40], 349.5 million years
|
| Upper Boundary: |
DER Erdbacher Kalk top [08,90], 345.3 million years
|