Oa
Oanduella Männil, 1958 †
- Oanduella antiqua Männil, 1958
- Oanduella bassleri Männil, 1958
- Oanduella maennili Pushkin, 1976
Bryozoa → Stenolaemata → Cryptostomida → Stictoporellina → Stictoporellidae → Stictoporellinae
- Izvori za vrste[1]
Oanduellina Pushkin, 1977†
- Oanduellina baltea Lavrentjeva, 1993
- Oanduellina bella Lavrentjeva, 1993
- Oanduellina distributa Lavrentjeva, 1993
- Oanduellina leuchtenbergi Pushkin, 1977
- Oanduellina maculata Pushkin, 1977
- Oanduellina porifera (Kopajevich, 1975)
- Oanduellina reticulata Pushkin, 1977
Bryozoa → Stenolaemata → Cryptostomida → Ptilodictyina → Ptilodictyidae → Virgatellinae
Od
- Odontionella
- Odontoporella
Og
†Ogiva Jullien 1881
- †Ogiva concamerata Waters 1881 [2]
- †Ogiva ellinorvoigtae Martha et al. 2015 [2]
- †Ogiva elongata Canu and Bassler 1935 [2]
- †Ogiva incompta Gordon and Taylor 1999 [2]
- †Ogiva promonturiorum Voigt 1924 [2]
Bryozoa → Gymnolaemata → Cheilostomata → Onychocellidae
Ogivalia Jullien, 1882
- Ogivalia elegans (d'Orbigny, 1842) [3]
- Ogivalia sagittirostra Hayward & Winston, 1994 [3]
Bryozoa → Gymnolaemata → Cheilostomatida
Ogivalina Canu & Bassler 1917
- Ogivalina dimorpha (Canu, 1907) [4]
- Ogivalina dimorpha meridionalis (Canu, 1919) [4]
- Ogivalina elongata Canu & Bassler, 1920 [4]
- Ogivalina elongata minor Canu & Bassler, 1920 [4]
- Ogivalina eximipora Canu & Bassler, 1917 [4]
- Ogivalina gemellaroi Cipolla, 1921 [5]
- Ogivalina gemmellaroi Cipolla, 1921 [4]
- Ogivalina mutabilis Canu & Bassler, 1918 [4]
- Ogivalina parvula (Ulrich & Bassler, 1904) [4]
- Ogivalina ramiformis Kühn, 1930 [4]
Bryozoa → Gymnolaemata → Cheilostomatida → Calloporoidea → Calloporidae
Om
- Omalosecosa
On
- Onchoporella
- Onchoporoides
- Oncousoecia
- Oncousoeciidae
- Onychoblestrum
- Onychocella
- Onychocellidae
Op
- Opaeophora
- Oppiphorina
Or
- Orbipora
- Orbiporidae
- Orbituliporidae
- Orthoporidra
- Orthoporidroides
- Orthoscuticella
Os
- Osburnea
- Oshurkovia
- Osthimosia
Ot
- Otionellidae
- Otionellina