| Geisonoceras | |
|---|---|
| |
| Fossil of Geisonoceras species | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | †Orthocerida |
| Family: | †Geisonoceratidae |
| Genus: | †Geisonoceras Hyatt, 1884 |
Geisonoceras is an extinct orthocerid genus named by Hyatt, 1884, and type for the Geisonoceratidae established by Zhuravleva in 1959.