This list of prehistoric bryozoans is an attempt to create a comprehensive listing of all genera that have ever been included in the bryozoa which are known from the fossil record. This list excludes purely vernacular terms. It includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia), or were not formally published (nomina nuda), as well as junior synonyms of more established names, and genera that are no longer considered bryozoans. Naming conventions and terminology follow the International Code of Zoological Nomenclature, as indicated.
A
Acanthocella
Acanthoceramoporella
Acanthocladia
Acanthoclema
Acanthodesia
Acantholaminatus
Acanthopora
Acanthoporella
Acanthoporidea
Acanthotrypa
Acanthotrypina
Acoscinopleura
Acrogenia
Actinopora
Actinotaxia
Actinotrypa
Actinotrypella
Actisecos
Adenifera
Adeona
Adeonella
Adeonellopsis
Admiratella
Aechmella
Aegyptopora
Aeolopora
Aetea
Aetomacladia
Aggregopora
Aimulosia
Aisenvergia
Akatopora
Alderina
Allantopora
Allonema
Alternifenestella
Altshedata
Aluverina
Alveolaria
Alwynopora
Alysidota
Amalgamoporous
Amalgamoprus
Amathia
Ammatophora
Amphiblestrella
Amphiblestrum
Amphimorsoniella
Amphiporella
Amplexopora
Amsassipora
Amurodictya
Anaphragma
Anaptopora
Anarthropora
Anastomopora
Andriopora
Angelopora
Anguisia
Anisotrypa
Anisotrypella
Annectocyma
Annunziopora
Anolotichia
Anomalotoechus
Anornithopora
Anotopora
Antropora
Aostipora
Apatotervia
Apertostella
Aplousina
Apsendesia
Arachnidid
Arachnidium
Arachnoidella
Arachnopusia
Araxopora
Arborocladia
Archaeofenestella
Archaeomeson
Archimedes
Arcticopora
Arctipoora
Argopora
Armillopora
Artchedella
Arthroclema
Arthropoma
Arthrostyloecia
Arthrostylus
Arthrotrypa
Ascodictyon
Ascopora
Ascoporella
Asperopora
Aspidopora
Aspidostoma
Assatkinella
Astralochoma
Astrovidictya
Astroviella
Astroviellina
Atacama (see Plesiothoa) Atactopora Atactoporella Atactoporidra Atactotoechus Atagma Atelesopora Athrophragma Atractosoecia Attinopora Auchenopora Australofenestella Australopolypora