Dodatak:Popis mahovnjaka, B
Ba uredi
- Bantariella
- Bathosella
- Bathyalozoon
- Bathyalozoontidae
- Bathycellaria
- Bathypora
- Bathysoecia
- Batopora
- Batoporidae
- Baudina
Be uredi
- Beania
- Beaniidae
- Bellulopora
- Belluloporidae
- Belluloporoidea
- Benedenipora
- Benedeniporidae
- Berenicea
- Bereniceidae
Bi uredi
- Bicellariella
- Bicellarina
- Bicrisia
- Bidenkapia
- Bidiastopora
- Bientalophora
- Bifaxaria
- Bifaxariidae
- Bifaxarioidea
- Biflustra
Biidmonea Calvet, 1903 uredi
- Biidmonea fayalensis Calvet, 1903
Bryozoa → Stenolaemata → Cyclostomatida → Cancellata → Crisinidae
- Bipora
- Bisidmonea
- Bitectipora
- Bitectiporidae
Bo uredi
Bobiesipora uredi
- †Bobiesipora fasciculata Reuss, 1848
Animalia → Bryozoa → Cyclostomata
Bobinella d'Hondt, 1981 uredi
- Bobinella atlantica d'Hondt, 1981
Bryozoa → Gymnolaemata → Cheilostomatida → Flustrina → Buguloidea → Candidae
- Bockiella
- Borgella
- Borgiola
- Bostrychophora
- Bostrychopora
- Bowerbankia
Br uredi
- Bracebridgia
- Brendella
- Brettia
- Brettiella
- Brettiopsis
- Briarachnia
- Brydonellidae
- Bryocalyx
- Bryocryptella
- Bryocryptellidae
- Bryopastor
- Bryopastoridae
- Bryopesanser
- Bryorachis
- Bryosartor
Bu uredi
- Buchneria
- Buffonellaria
- Buffonellodes
- Buffonellodidae
- Bugula
- Bugularia
- Bugulella
- Bugulicellaria
- Bugulidae
- Buguloidea
- Bugulopsis
- Bulbella
- Buskea
- Buskia
- Buskiidae