Genus
Geisonoceras Hyatt, 1884
Aiheeseen liittyvät julkaisut
Kröger, B. 2013. The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden. European Journal of Taxonomy 41, 41, 1-110. DOI:10.5852/ejt.2013.41
Balashov, E. A. 1959. Nekotorye novye vidy nautiloidej ordovika, silura i devona SSSR. Materialy k "Osnovam paleontologii", Bypusk 3, pp. 37-46. Paleontologicheskii Institut Akademii Nauk SSSR.
List of species
2. Geisonoceras ievense Balashov, 1959 | Haljala Stage
3. Geisonoceras wegelini (Angelin, 1880) | Vormsi Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Geisonoceratidae |
| Genus | Archigeisonoceras |
| Geisonoceras | |
| Species | heintzi |
| ievense | |
| wegelini | |
| Genus | Harrisoceras |
| Ioachimoceras | |
| Kinnekulloceras | |
| Nilssonoceras | |
| Ordogeisonoceras | |
| Temperoceras | |
| unranked | Protokionoceras |