perekond
Isorthoceras Flower, 1962
Valik taksonit käsitlevast teaduskirjandusest
Kröger, B. 2025. The Lyckholm acme of cephalopods – Review of the late Katian (Vormsi–Pirgu regional stages) Ordovician cephalopods of Estonia.  European Journal of Taxonomy   978,      1-169. DOI:10.5852/ejt.2025.978.2801
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
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. 
Leitud liigid
1. Isorthoceras angelini Kröger, 2013 | Katy lade
2. Isorthoceras cavi Kröger et Aubrechtová, 2018 | Keila lade
3. Isorthoceras curvilineatum Kröger, 2013 | Katy lade
4. Isorthoceras dalecarlense Kröger, Ebbestad, Högström et Frisk, 2011 | Hirnanti lade
5. Isorthoceras elongatocinctum (Portlock, 1843) | Katy lade
6. Isorthoceras heroyense (Strand, 1934) | Katy lade
7. Isorthoceras junceum (Hall, 1847) | Hirnanti lade
8. Isorthoceras luhai (Stumbur, 1956) | Ülem-Ordoviitsium
9. Isorthoceras maris Kröger et Aubrechtová, 2018 | Keila lade
11. Isorthoceras padisense Kröger et Aubrechtová, 2018 | Keila lade
13. Isorthoceras suave (Angelin, 1880) | Katy lade
16. Isorthoceras vexilli Kröger et Aubrechtová, 2018 | Keila lade
17. Isorthoceras wahlenbergi Niko, 2008 | Katy lade
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Mollusca | 
| klass | Cephalopoda | 
| alamklass | Orthoceratia | 
| selts | Orthocerida | 
| alamselts | Orthoceratina | 
| sugukond | Proteoceratidae | 
| perekond | Clothoceras | 
| Ephippiorthoceras | |
| Gorbyoceras | |
| Isorthoceras | |
| liik | angelini | 
| bisignatum | |
| cavi | |
| curvilineatum | |
| dalecarlense | |
| elongatocinctum | |
| heroyense | |
| junceum | |
| luhai | |
| maris | |
| nikwis | |
| padisense | |
| saaremense | |
| sociale | |
| suave | |
| sylphide | |
| urdr | |
| vexilli | |
| wahlenbergi | |
| perekond | Transorthoceras |