Species
Obolus ruchini Khazanovitch et Popov, 1984
Synonymy list
1984     Obolus ruchini Khazanovitch et Popov, sp. nov. — Khazanovich et al. , pp. 37, fig. 3:21-30
1989     Obolus ruchini Khazanovitch et Popov, 1984 — Popov & Khazanovitch , pp. 101, fig. 1.12-17
1996     Obolus ruchini Khazanovitch et Popov, 1984 — Puura, I. , pp. 61, fig. 51
2002     Obolus apollinis — Emig , pp. 3
2003     Obolus ruchini Khazanovitch et Popov, 1984 — Popov & Holmer , fig. 4C; 5A,B
Selection of related publications
Lang, L. 2015. Baculate shell structure in Early Palaeozoic linguliform brachiopods.  Dissertationes Geologicae Universitatis Tartuensis   40,      1-113.  University of Tartu Press. 
Puura, I. 1996. Lingulate brachiopods and biostratigraphy of the Cambrian-Ordovician boundary beds in Baltoscandia.  Doctoral Thesis, pp. 1-214.   Uppsala University. 
Khazanovich, K. K., Popov, L. E., Melnikova, L. M. 1984. Bezzamkovye brahiopody, ostrakody (bradoriidy) i hiolitel'minty iz sablinskoj svity Leningradskoj oblasti.  Paleontologicheski Zhurnal   1984,   4,   33-47.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Linguliformea | 
| Class | Lingulata | 
| Order | Lingulida | 
| Superfamily | Linguloidea | 
| Family | Obolidae | 
| Subfamily | Obolinae | 
| Genus | Obolus | 
| Species | apollinis | 
| eichwaldi | |
| rebrovi | |
| ruchini | |
| transversus | 
References based on distribution
- Khazanovich et al., 1984 Tosna River, Leningrad Oblast Sablino Formation