Species
Hyolithes mickwitzi Öpik, 1926
Synonymy list
1926     Hyolithus (Orthotheca) mickwitzi sp. nov. — Öpik , pp. 46, fig. 2
1973     Hyolithes mickwitzi Öpik — Jankauskas & Posti , pp. 146
2006     Hyolithes mickwitzi Öpik, 1926 — Malinky , pp. 90
Selection of related publications
Jankauskas, T., Posti, E. 1973. Micropaleontological characteristic of the stratotype sections of the Estonian Lower Cambrian.  Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология   22,   2,   143-148. DOI:10.3176/chem.geol.1973.2.08
Öpik, A. 1926. Über den estländischen Blauen Ton.  Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded   33,   1,   39-47.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Hyolitha | 
| Order | Hyolithida | 
| Family | Hyolithidae | 
| Genus | Hyolithes | 
| Species | "Hyolithes" vaginati | 
| Hyolitha inaequistriatus | |
| acutus | |
| bisulcatus | |
| burgessi | |
| concinnus | |
| gerhardi | |
| innotatus | |
| latissiumus | |
| latus | |
| mickwitzi | |
| nathorsti | 
References based on distribution
- Öpik, 1926a Kunda Lontova Formation
 - Jankauskas & Posti, 1973 Lontova Formation