Genus
Rhynchorthoceras zaddachi Remele, 1882
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Astroviida |
| Suborder | Lituitina |
| Family | Sinoceratidae |
| Genus | Rhynchorthoceras |
| zaddachi | |
| Species | angelini |
| beyrichii | |
| breynii | |
| conicum | |
| helgoeyense | |
| kranepuhlense | |
| rugium |