Genus
Isorthoceras Flower, 1962
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., Ebbestad, J. O. R., Högström, A. E. S., Frisk, Ǻ. M. 2011. Mass concentration of Hirnantian cephalopods from the Siljan District, Sweden; taxonomy, palaeoecology and palaeobiogeographic relationships. Fossil Record 14, 1, 35-53. DOI:10.1002/mmng.201000014
List of species
1. Isorthoceras angelini Kröger, 2013 | Katian
2. Isorthoceras cavi Kröger et Aubrechtová, 2018 | Keila Stage
3. Isorthoceras curvilineatum Kröger, 2013 | Katian
5. Isorthoceras elongatocinctum (Portlock, 1843) | Katian
6. Isorthoceras heroyense (Strand, 1934) | Katian
7. Isorthoceras junceum (Hall, 1847) | Hirnantian
8. Isorthoceras luhai (Stumbur, 1956) | Upper Ordovician
9. Isorthoceras maris Kröger et Aubrechtová, 2018 | Keila Stage
11. Isorthoceras padisense Kröger et Aubrechtová, 2018 | Keila Stage
12. Isorthoceras suave (Angelin, 1880) | Katian
15. Isorthoceras vexilli Kröger et Aubrechtová, 2018 | Keila Stage
16. Isorthoceras wahlenbergi Niko, 2008 | Katian
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Proteoceratidae |
| Genus | Clothoceras |
| Ephippiorthoceras | |
| Gorbyoceras | |
| Isorthoceras | |
| Species | angelini |
| bisignatum | |
| cavi | |
| curvilineatum | |
| dalecarlense | |
| elongatocinctum | |
| heroyense | |
| junceum | |
| luhai | |
| maris | |
| nikwis | |
| padisense | |
| sociale | |
| suave | |
| sylphide | |
| urdr | |
| vexilli | |
| wahlenbergi | |
| Genus | Transorthoceras |