Species
Atrypa orbicularis (Sowerby, J. C. de, 1839)
Synonymy list
2004     Gotatrypa? orbicularis (J. de C. Sowerby) — Copper , pp. 56, fig. pl. 9B, figs. 9a-e
2019     Protatrypa orbicularis (J. de C. Sowerby) — Cocks , pp. 134-135, fig. pl. 36, figs. 4-16
2021     Atrypa orbicularis (Sowerby, J. de C.), 1839 — Baarli , pp. 417, fig. 15 A-K, 16, 17
Selection of related publications
Baarli, B. G. 2021. Survival and recovery atrypid fauna following the terminal Ordovician extinction, the Atrypinae: central Oslo Region, Norway.  Historical Biology   33,   3,   403-440. DOI:10.1080/08912963.2019.1620228
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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 | orbicularis | 
References based on distribution
- Baarli, 2021b Skytterveien, Asker, Norway Aeronian