Family
Geisonoceratidae Zhuravleva, 1959
Selection of related publications
Kröger, B., Aubrechtová, M. 2019. The cephalopods of the Kullsberg Limestone Formation, Upper Ordovician, central Sweden and the effects of reef diversification on cephalopod diversity. Journal of Systematic Palaeontology 17, 12, 961-995. DOI:10.1080/14772019.2018.1491899
Kröger, B., Aubrechtová, M. 2018. Cephalopods from reef limestone of the Vasalemma Formation, northern Estonia (latest Sandbian, Upper Ordovician) and the establishment of a local warm-water fauna. Journal of Systematic Palaeontology 16, 10, 799-839. DOI:10.1080/14772019.2017.1347212
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
Kröger, B. 2004. Revision of Middle Ordovician orthoceratacean nautiloids from Baltoscandia. Acta Palaeontologica Polonica 49, 1, 57-74.
Saladžius, V. J. 1966. Mollusk fauna of the Silurian deposits of the south of the East Baltic territory. Palaeontology and stratigraphy of the Baltic and the Byelorussia. Number I (VI), pp. 31-73. Mintis.
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.
Sweet, W. C. 1958. The Middle Ordovician of the Oslo Region, Norway: 10. Nautiloid Cephalopods. Norsk Geologisk Tidsskrift 38, 1, 1-178.
Foord, A. H. 1887. On “Orthoceras (Endoceras) duplex” Wahlenberg et auct., with descriptions of three new species of Endoceras from the Ordovician of Sweden and Russia contained in the British Museum (Natural History). Annals and Magazine of Natural History 5, 20, 393–403.
List of species
2. Archigeisonoceras folkeslundense Kröger, 2004 | Lasnamägi Stage
3. Archigeisonoceras picus Kröger, 2004 | Volkhov Stage
4. Archigeisonoceras repplingense Kröger, 2004 | Volkhov Stage
6. Geisonoceras ievense Balashov, 1959 | Haljala Stage
7. Geisonoceras wegelini (Angelin, 1880) | Vormsi Stage
8. Harrisoceras volchovense Balashov, 1959 | Uhaku Stage
9. Ioachimoceras kybartense Saladzhius, 1966 | Ludlow
13. Ordogeisonoceras amplicameratum (Hall, 1847) | Upper Ordovician
14. Ordogeisonoceras foerstei (Strand, 1934) | Katian
15. Ordogeisonoceras tartuensis Kröger et Aubrechtová, 2018 | Keila Stage
17. Protokionoceras isotelorum Strand, 1934 | Ordovician
18. Protokionoceras strandi Troedsson, 1932 | Upper Ordovician
19. Temperoceras kunkoyense Saladzhius, 1966 | Ludlow
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Arionoceratida |
| Arionoceratidae | |
| Dawsonoceratidae | |
| Eriditidae | |
| Geisonoceratidae | |
| Genus | Archigeisonoceras |
| Geisonoceras | |
| Harrisoceras | |
| Ioachimoceras | |
| Kinnekulloceras | |
| Nilssonoceras | |
| Ordogeisonoceras | |
| Temperoceras | |
| unranked | Protokionoceras |
| Family | Lamellorthoceratidae |
| Orthoceratidae | |
| Proteoceratidae | |
| Tripteroceratidae |
See also