Dodatak:Popis ramenonožaca, O
Oc uredi
Oceanithyris Bitner & Zezina, 2013 uredi
- Oceanithyris juveniformis Bitner & Zezina, 2013
Brachiopoda → Rhynchonellata → Terebratulida → Dyscolioidea → Dyscoliidae → Dyscoliidae (nesiguran položaj)
Os uredi
Ospreyella Lüter, 2003 uredi
- Ospreyella depressa Lüter & Wörheide, 2003
- Ospreyella maldiviana Logan, 2005
- Ospreyella mutiara Simon & Hoffmann, 2013
- Ospreyella palauensis Logan, 2008
Animalia → Brachiopoda → Rhynchonellata → Thecideida → Thecideoidea → Thecideidae → Lacazellinae