Species
Rhynchorthoceras conicum (Hisinger, 1837)
Synonymy list
1837     Orthoceratites conicus — Hisinger , pp. 29, fig. pl. 9:5
1927     Orthoceras conicum Hisinger, 1837 — Öpik 
2022     Rhynchorthoceras conicum (Hisinger, 1837) — Aubrechtová & Korn , pp. 20, fig. 14A–C
Selection of related publications
Öpik, A. 1927. Die Inseln Odensholm und Rogö. Ein Beitrag zur Geologia von NW-Estland.  Tartu Ülikooli Geoloogia Instituudi Toimetused   9,      1-69.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Cephalopoda | 
| Subclass | Orthoceratia | 
| Order | Astroviida | 
| Suborder | Lituitina | 
| Family | Sinoceratidae | 
| Genus | Rhynchorthoceras | 
| zaddachi | |
| Species | angelini | 
| beyrichii | |
| breynii | |
| conicum | |
| helgoeyense | |
| kranepuhlense | |
| rugium | 
References based on distribution
- Öpik, 1927b Väike-Pakri Island Aseri Stage