Subgenus
Atrypa (Atrypa) Dalman, 1828
Selection of related publications
Copper, P. 2004. Silurian (Late Llandovery-Ludlow) Atrypid Brachiopods from Gotland, Sweden, and Welsh Borderlands, Great Britain. pp. 1-219. DOI:10.1139/9780660190112
Rubel, M., Musteikis, P., Popov, L. 1984. Sistematicheskii spisok brahiopod silura Pribaltiki [Систематический список брахиопод силура Прибалтики]. pp. 1-36.  Eesti Teaduste Akadeemia. 
Bekker, H. 1924. Devon Irboska ümbruses: stratigraafia, fauna ja paleogeograafia.  Eesti Loodusteaduse Arhiiv   X,   1,   1-55.  K. Mattiesen. 
List of species
1. Atrypa (Atrypa affinis (J. Sowerby, 1822) | Wenlock
4. Atrypa (Atrypa) harknessi Alexander, 1949 | Wenlock
5. Atrypa (Atrypa) murchisoni Alexander, 1949 | Ludlow
6. Atrypa (Atrypa) reticularis (Linnaeus, 1758) | Ludlow
7. Atrypa (Atrypa) slitea Copper, 2004 | Wenlock
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Atrypida | 
| Suborder | Atrypidina | 
| Superfamily | Atrypoidea | 
| Family | Atrypidae | 
| Subfamily | Atrypinae | 
| Genus | Atrypa | 
| Subgenus | (Atrypa) | 
| Species | Atrypa (Atrypa affinis | 
| dzwinogrodensis | |
| gotha | |
| harknessi | |
| murchisoni | |
| reticularis | |
| slitea | |
| Subspecies | alata | 
| Species | orbicularis |