Order
Spiriferida Waagen, 1883
Selection of related publications
Bassett, M. G., Kaljo, D., Teller, L. 1989. The Baltic region.  National Museum of Wales, Geological Series   9,      158-170.  National Museum of Wales. 
Rubel, M., Musteikis, P., Popov, L. 1984. Sistematicheskii spisok brahiopod silura Pribaltiki [Систематический список брахиопод силура Прибалтики]. pp. 1-36.  Eesti Teaduste Akadeemia. 
Tsegelnjuk, P. D. 1976. Brahiopody i stratigrafiâ nižnego paleozoâ Volyno-Podolii. pp. 1-155.  Naukova Dumka. 
Bassett, M. G., Cocks, L. R. M. 1974. A review of Silurian brachiopods from Gotland.  Fossils and Strata   3,      1-56.
Rubel, M. 1970. On the distribution of brachiopods in the lowermost Llandovery of Estonia.  Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология   19,   1,   69-79. DOI:10.3176/chem.geol.1970.1.11
Bekker, H. 1924. Devon Irboska ümbruses: stratigraafia, fauna ja paleogeograafia.  Eesti Loodusteaduse Arhiiv   X,   1,   1-55.  K. Mattiesen. 
List of species
1. Boucotinskia sulcata (Hisinger, 1831) | Ludlow
5. Cyrtia wenjukovi Tsegelnjuk, 1976 | Adavere Stage
6. Cyrtospirifer latavicus Gravitis, 1981 | Dubniki Stage
9. Eomartiniopsis ludloviensis Rybnikova, 1967 | Ludlow
10. Eospirifer marklini (Verneuil, 1848) | Adavere Stage
11. Eospirifer profusus Rubel, 1970 | Adavere Stage
13. Howellella (Howellella) angulata Rubel, 1970 | Kuressaare Stage
15. Howellella (Howellella) cuniculi Rubel, 1970 | Rootsiküla Stage
16. Howellella (Howellella) elegans (Muir-Wood, 1925) | Paadla Stage
17. Howellella (Howellella) nucula (Barrande, 1879) | Jaani Stage
18. Howellella bragensis (Wenjukow, 1899) | Ludlow
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Athyridida | 
| Atrypida | |
| Orthida | |
| Pentamerida | |
| Protorthida | |
| Rhynchonellida | |
| Spiriferida | |
| Suborder | Delthyridina | 
| Spiriferidina | |
| Order | Spiriferinida | 
| Terebratulida | |
| Thecideida |