Superfamily
Delthyrioidea Phillips, 1841
Selection of related publications
Bassett, M. G., Cocks, L. R. M. 1974. A review of Silurian brachiopods from Gotland.  Fossils and Strata   3,      1-56.
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
4. Howellella (Howellella) angulata Rubel, 1970 | Kuressaare Stage
6. Howellella (Howellella) cuniculi Rubel, 1970 | Rootsiküla Stage
7. Howellella (Howellella) elegans (Muir-Wood, 1925) | Paadla Stage
8. Howellella (Howellella) nucula (Barrande, 1879) | Jaani Stage
9. Howellella bragensis (Wenjukow, 1899) | Ludlow
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Spiriferida | 
| Suborder | Delthyridina | 
| Superfamily | Delthyrioidea | 
| Family | Cyrtinopsidae | 
| Delthyrididae | |
| Hysterolitidae | |
| Mucrospiriferidae | |
| Genus | Boucotinskia | 
| Superfamily | Reticularioidae |