Species
Cyrtorizoceras minneapolis Clarke, 1897
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Multiceratia |
| Order | Oncocerida |
| Family | Oncoceratidae |
| Genus | Cyrtorizoceras |
| Species | borni |
| hariense | |
| minneapolis | |
| tenue | |
| thorsundi |
See also