Genus
Archigeisonoceras Chen, 1984
Aiheeseen liittyvät julkaisut
Kröger, B. 2004. Revision of Middle Ordovician orthoceratacean nautiloids from Baltoscandia. Acta Palaeontologica Polonica 49, 1, 57-74.
List of species
2. Archigeisonoceras folkeslundense Kröger, 2004 | Lasnamägi Stage
3. Archigeisonoceras picus Kröger, 2004 | Volkhov Stage
4. Archigeisonoceras repplingense Kröger, 2004 | Volkhov Stage
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Geisonoceratidae |
| Genus | Archigeisonoceras |
| Species | elegatulum |
| folkeslundense | |
| picus | |
| repplingense | |
| Genus | Geisonoceras |
| Harrisoceras | |
| Ioachimoceras | |
| Kinnekulloceras | |
| Nilssonoceras | |
| Ordogeisonoceras | |
| Temperoceras | |
| unranked | Protokionoceras |