Species
Orthonybyoceras isakari Kröger et Aubrechtová, 2018
Synonymy list
2018     Orthonybyoceras isakari sp. nov. — Kröger & Aubrechtova , pp. 817, fig. 16C, 17B, 18A,G,H
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
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Cephalopoda | 
| Subclass | Actinoceratoidea | 
| Order | Actinocerida | 
| Family | Ormoceratidae | 
| Genus | Orthonybyoceras | 
| Species | dyeri | 
| isakari | |
| moisense | 
References based on distribution
- Kröger & Aubrechtová, 2018 Rummu quarry Keila Stage
- Kröger & Aubrechtová, 2018 Vasalemma Keila Stage