Species
Trocholites depressus (Eichwald, 1840)
Synonymy list
1840 Nautilus depressus m. — Eichwald , pp. 125
1840 Nautilus depressus m. — Eichwald , pp. 106, fig. German edition
1859 Calymenia depressa — Eichwald , fig. 50:5a,b
1860 Calymenia depressa m. — Eichwald , pp. 1305
1861 Calymenia depressa — Eichwald , pp. 379, fig. 29:5a,b,c
1881 Paleonautilus depressus — Remele , pp. 13
1890 Paleonautilus depressus — Remele , pp. 37
1891 Trocholites depressus — Schröder , pp. 13, fig. 1:4,7
1926 Trocholites depressus — Patrunky , pp. 125
1953 Trocholites depressus (Eichwald, 1840) — Balashov , pp. 242, fig. VII 2
Selection of related publications
Aubrechtová, M., & Korn, D. 2025. The coiled Middle Ordovician cephalopod genera Trocholites and Curtoceras (Tarphyceratida) from Baltoscandia and north-central Europe. European Journal of Taxonomy 982, 1-78. DOI:10.5852/ejt.2025.982.2843
Balashov, Z. G. 1953. Svernutye i polusvernutye nautiloidei ordovika Pribaltiki. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 217-300. Gostoptehizdat.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii. pp. 1-521. R. Golike (former Ya. Ionsona).
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Tarphyceratia |
| Order | Tarphyceratida |
| Family | Trocholitidae |
| Genus | Trocholites |
| Species | ammonius |
| baldri | |
| contractus | |
| damesii | |
| depressus | |
| freyjae | |
| gennadii | |
| glacialis | |
| hospes | |
| incongruus | |
| kadakaensis | |
| luna | |
| macromphalus | |
| odini | |
| orbis | |
| remelei | |
| soraviensis | |
| splendor | |
| triangulus | |
| tureki | |
| vodickai | |
| vortex | |
| zaryensis |
References based on distribution
- Eichwald, 1861a Osmussaar 1
- Balashov, 1953a Osmussaar 1 Lasnamägi Stage