Genus
Obolus Eichwald, 1829
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. 
Lang, L., Uibopuu, E., Puura, I. 2011. Nanostructures in Palaeozoic linguloid brachiopods.  Memoirs of the Association of Australasian Palaeontologists   41,      359−366.
Popov, L. E., Holmer, L. E. 2003. Understanding linguloid brachiopods: Obolus and Ungula as examples.  Carnets de Géologie      6,   1-13.
Puura, I. 1996. Lingulate brachiopods and biostratigraphy of the Cambrian-Ordovician boundary beds in Baltoscandia.  Doctoral Thesis, pp. 1-214.   Uppsala University. 
Kaljo, D., Borovko, N., Heinsalu, H., Khazanovich, K., Mens, K., Popov, L., Sergejeva, S., Sobolevskaya, R., Viira, V. 1986. The Cambrian-Ordovician boundary in the Baltic-Ladoga clint area (North Estonia and Leningrad Region, USSR).  Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология   35,   3,   97-108. DOI:10.3176/geol.1986.3.01
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.
Eichwald, E. 1860. Lethaea Rossica ou Paléontologie de la Russie. Premier volume. Ancienne Période en deux sections. pp. XIX+1–1657.  E. Schweizerbart.  DOI:10.5962/bhl.title.52391
List of species
4. Obolus ruchini Khazanovitch et Popov, 1984 | Baltic Middle Cambrian
5. Obolus transversus (Pander, 1830) | Baltic Middle Cambrian
 Loading... 
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Linguliformea | 
| Class | Lingulata | 
| Order | Lingulida | 
| Superfamily | Linguloidea | 
| Family | Obolidae | 
| Subfamily | Obolinae | 
| Genus | Apatobolus | 
| Euobolus | |
| Expellobolus | |
| Foveola | |
| Leptembolon | |
| Lingulella | |
| Mytoella | |
| Obolus | |
| Species | apollinis | 
| eichwaldi | |
| rebrovi | |
| ruchini | |
| transversus | |
| Genus | Oepikites | 
| Paldiskites | |
| Ralfia | |
| Rebrovia | |
| Schmidtites | |
| Spinilingula | |
| Trigonoglossa | |
| Ungula | |
| Westonia | 
 See also