Genus
Orthonybyoceras Shimizu et Obata, 1935
Selection of related publications
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
List of species
1. Orthonybyoceras cf. dyeri (Miller, 1875) | Keila Stage
2. Orthonybyoceras isakari Kröger et Aubrechtová, 2018 | Keila Stage
3. Orthonybyoceras moisense Kröger et Aubrechtová, 2018 | Keila Stage
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Actinoceratoidea |
| Order | Actinocerida |
| Family | Ormoceratidae |
| Genus | Adamsoceras |
| Aluveroceras | |
| Ormoceras | |
| Orthonybyoceras | |
| Species | cf. dyeri |
| isakari | |
| moisense |