List of molluscan genera represented in the fossil record
This list of molluscan genera represented in the fossil record is a list which is composed primarily of many mollusk genera which occur as fossils. Some of these genera are extant, some are extinct.
Some genera listed here are organisms other than mollusks.
This list article was originally based on Jack Sepkoski's online fossil genus databases, here .
List
A
- Abra
- Abretiella
- Acanthina
- Acanthinucella
- Acanthocardia
- Acanthochitona
- Acanthocyathus
- Acanthocythereis
- Acanthophyllia
- Acanthopleura
- Acanthoporella
- Acar
- Acesta
- Acharax
- Achiurus
- Acila
- Acirsa
- Acliceratia
- Aclis
- Acmaea
- Acme
- Acominia
- Acorylus
- Acrilla
- Acrilloscala
- Acrobotrys
- Acrobrochus
- Acrohelia
- Acrosphaera
- Acrospyris
- Acrostemma
- Acrosterigma
- Actaeon
- Actaeonema
- Actaeopyramis
- Acteocina
- Actinocythereis
- Actinoleuca
- Actinomma
- Actinopora
- Actinopsis
- Actisecos
- Acuminia
- Acupurpura
- Adelomelon
- Ademtula
- Adeonella
- Adeonellopsis
- Adinus
- Admete
- Adontorhina
- Adula
- Adusta
- Aegospyris
- Aeidimytilus
- Aeneator
- Aequipecten
- Aeretica
- Aesopus
- Aetea
- Afer
- Aforia
- Afriscrobs
- Afrocardium
- Agaronia
- Agatha
- Agathirses
- Agathistoma
- Agathodonta
- Agathotoma
- Agatrix
- Aglaurides
- Agnewia
- Agriopoma
- Agulhasia
- Agulhasina
- Aimulosia
- Aka
- Akatopora
- Akburunella
- Akera
- Alaba
- Alabina
- Albula
- Alcidiella
- Alcira
- Alcithoe
- Alderina
- Aldingia
- Alectona
- Alectrion
- Alectryonella
- Aletes
- Algaroda
- Alia
- Aliculastrum
- Aligena
- Aliger
- Allantopora
- Allocentrotus
- Allopora
- Altivasum
- Altrix
- Alutera
- Alvania
- Alvinia
- Amaea
- Amalda
- Amathia
- Amaura
- Amauropsis
- Amblyacrum
- Amblypneustes
- Ambostracon
- Americardia
- Amerycina
- Amiantis
- Amicula
- Ammatophora
- Ammotrophus
- Amorena
- Amoria
- Amphelia
- Amphiblestrum
- Amphichaena
- Amphictene
- Amphicyclia
- Amphidesma
- Amphileberis
- Amphimenium
- Amphinerita
- Amphiophiura
- Amphioplus
- Amphisphaera
- Amphissa
- Amphistegina
- Amphistylus
- Amphithalamus
- Ampulla
- Amusium
- Amyclina
- Amygdalum
- Anachis
- Anacithara
- Anadara
- Anakinetica
- Anapagurus
- Anapepta
- Anarthropora
- Anastes
- Anatina
- Anatoma
- Anazola
- Anchistrocheles
- Anchoa
- Anchomasa
- Ancilla
- Ancillista
- Ancistrolepis
- Ancistromesus
- Ancistrosyrinx
- Anculosa
- Angaria
- Anguipecten
- Anguisia
- Angulus
- Anisocorbula
- Anisodonta
- Annachlamys
- Annectocyma
- Annepona
- Anodontia
- Anomalisipho
- Anomalocardia
- Anomalodiscus
- Anomastraea
- Anomia
- Anoxypristis
- Ansates
- Antalis
- Antarctissa
- Antennarius
- Anthocyrtidium
- Anthocyrtis
- Anthocyrtoma
- Anthospyris
- Anticlimax
- Antigona
- Antiguraleus
- Antillachelus
- Antillophos
- Antimelatoma
- Antimitra
- Antinioche
- Antinodulus
- Antiplanes
- Antisolarium
- Antizafra
- Antropora
- Aoteadrillia
- Apataxia
- Apatopygus
- Aphera
- Aphia
- Aphrocallistes
- Apiocardia
- Apiotoma
- Aplocyathus
- Aplodinotus
- Aplousina
- Aplustrum
- Apogon
- Apolectus
- Apollon
- Apolymetis
- Aporrhais
- Appisania
- Apsilus
- Aptyxis
- Arabella
- Arabia
- Arabica
- Aracana
- Arachnidium
- Arachnoidella
- Arachnoides
- Arachnopusia
- Araeosoma
- Araeosteus
- Arbacia
- Arca
- Archaster
- Archicorys
- Archimediella
- Architectonica
- Archivesica
- Archohelia
- Arcinella
- Arcopagia
- Arcopaginula
- Arcopsis
- Arcoscalpellum
- Arctica
- Arctocephalus
- Arctomelon
- Arcturellina
- Arcuatula
- Arcularia
- Ardeamya
- Arene
- Arenicola
- Arenomya
- Arestorides
- Argalista
- Argilloecia
- Argobuccinum
- Argonauta
- Argopecten
- Argyripnus
- Argyropelecus
- Argyropeza
- Argyrosomus
- Argyrotheca
- Ariadnaria
- Ariomma
- Ariosoma
- Armatobalanus
- Arnoglossus
- Arossia
- Arrhoges
- Artedius
- Arthessidae
- Arthritica
- Arthropoma
- Artiscus
- Artocapsa
- Artoperina
- Artostrobium
- Artostrobus
- Arvicola
- Asa
- Asaphechinus
- Asaphis
- Ascitellina
- Aspa
- Aspella
- Asperdaphne
- Asperiscala
- Aspidostoma
- Astacopsis
- Astacus
- Astarte
- Astele
- Asteracmea
- Asterias
- Asterometridae
- Asterosmilia
- Asthenosoma
- Asthenotoma
- Astractura
- Astraea
- Astralium
- Astrangia
- Astreopora
- Astriclypeus
- Astrocyclia
- Astroides
- Astrolithium
- Astromma
- Astronesthes
- Astropecten
- Astrophacus
- Astrosclerida
- Astrosestrum
- Astya
- Astyris
- Atalacmea
- Ataxocerithium
- Atelecyclus
- Atergatis
- Atheresthes
- Atherina
- Atherinopsis
- Atilia
- Atlanta
- Atractotrema
- Atrimitra
- Atrina
- Attenuata
- Attiliosa
- Attinopora
- Atys
- Aulacofusus
- Aulacomya
- Aulica
- Aulicina
- Aulites
- Aulophax
- Aulopus
- Aulorhynchus
- Aupouria
- Aurila
- Aurina
- Auristomia
- Australoecia
- Austrobalanus
- Austrocidaris
- Austrodosinia
- Austrodrillia
- Austrofusus
- Austromacoma
- Austromitra
- Austromytilus
- Austrophycis
- Austrosassia
- Austrotrophon
- Austrovenus
- Aversovalva
- Awateria
- Axinola
- Axinopsida
- Axinulus
- Axoprunum
- Axymene
- Azorica
- Azorinus
- Azumapecten
B
- Babella
- Babylonia
- Bactridium
- Bactrocythara
- Bailya
- Bairdia
- Bairdiella
- Bairdoppilata
- Balanophyllia
- Balanus
- Balcis
- Balistes
- Bankia
- Bankivia
- Barbarofusus
- Barbatia
- Barbierella
- Barentsia
- Barleeia
- Barnea
- Bartschella
- Baryspira
- Basiliola
- Basilissa
- Basilitrona
- Bassina
- Basslerites
- Bassozetus
- Basterotella
- Basterotia
- Bathropyramis
- Bathyarca
- Bathybembix
- Bathyclupea
- Bathycrinus
- Bathycyathus
- Bathycythere
- Bathygadus
- Bathygalea
- Bathylagus
- Bathylasma
- Bathysquilla
- Bathytoma
- Bathytormus
- Batillaria
- Batissa
- Batopora
- Batrachoides
- Beania
- Bedeva
- Beisselina
- Bela
- Bellaspira
- Bellastraea
- Bellaxinaea
- Belloliva
- Bellucina
- Belone
- Belonidium
- Bembicium
- Bembrops
- Bensonocythere
- Bentharca
- Benthocardiella
- Benthocomectes
- Benthomangelia
- Benthopecten
- Benthosema
- Berenicea
- Beringius
- Berryteuthis
- Berthelinia
- Beryx
- Besla
- Biavicularium
- Bicatillus
- Bicorbula
- Bicornucythere
- Bicrisia
- Bifaxaria
- Biflustra
- Bifurcium
- Binoculites
- Biplex
- Bisidmonea
- Bison
- Bisphaerocephalina
- Bittiolum
- Bittium
- Bivetiella
- Bivetopsia
- Bivonia
- Blasicrura
- Bolinichthyes
- Bolinus
- Bolma
- Bontaea
- Boreoscala
- Boreotrophon
- Bornia
- Borniola
- Borsonella
- Borsonia
- Bosquetina
- Bothus
- Botryocampe
- Botryocella
- Botryocyrtis
- Botryopyle
- Botryostrobus
- Botula
- Bouchardia
- Bracebridgia
- Brachaelurus
- Brachidontes
- Brachionichthys
- Brachiospyris
- Brachycythere
- Brachydeuterus
- Brachynotus
- Brachystomia
- Brachytoma
- Bractechlamys
- Bracytrochus
- Bradleya
- Brama
- Branchiostegus
- Bregmaceros
- Brevinucula
- Breynia
- Brisaster
- Brisingella
- Brissopsis
- Brissus
- Brocchinia
- Brochina
- Brookesena
- Brookula
- Brosme
- Brosmius
- Bryopa
- Bucardium
- Buccinanops
- Buccinofusus
- Buccinulum
- Buccinum
- Bucconia
- Buffonellodes
- Bufonariella
- Buglossidium
- Bulbus
- Bulla
- Bullata
- Bullia
- Bullina
- Buntonia
- Bursa
- Burtinella
- Buscotypus
- Buskia
- Busycon
- Busycoptypus
- Byssomera
- Bythoceratina
C
- Caberea
- Cabestanna
- Cadella
- Cadulus
- Caecum
- Caesia
- Caesio
- Calamocrinus
- Calantica
- Calappilia
- Calcancora
- Calcancorella
- Calcitrapessa
- Calclamnella
- Calclamnoidea
- Calcligula
- Callanaitis
- Callianassa
- Callianax
- Calliaster
- Callimitra
- Callinectes
- Callionymus
- Calliostoma
- Calliotectum
- Calliotropis
- Callista
- Callistele
- Callistochiton
- Callistocypraea
- Callistotapes
- Callithaca
- Calloarca
- Callocardia
- Callochiton
- Callolongchaeus
- Callopoma
- Callopora
- Calloporina
- Callorhinus
- Callorhynchus
- Callucina
- Callucinopsis
- Callyodon
- Calocidaris
- Calonectris
- Calotrophon
- Calpensia
- Calpurna
- Calthalotia
- Calthropella
- Calyptogena
- Calyptraea
- Calyptropsis
- Campages
- Campanile
- Canarium
- Cancellaria
- Cancellothyris
- Cancer
- Cancilla
- Canda
- Cannartidium
- Cannartiscus
- Cannobotrys
- Cantharidella
- Cantharidus
- Cantharus
- Cantrainea
- Capsella
- Capulacmaea
- Capulus
- Carapus
- Carcinoplax
- Cardilia
- Cardinalia
- Cardiocardita
- Cardioecia
- Cardiomya
- Cardisoma
- Cardita
- Carditamera
- Carditella
- Carditellopsis
- Cardites
- Carditopsis
- Cardium
- Cardobairdia
- Careliopsis
- Caretta
- Caribachlamys
- Caribiella
- Carinaria
- Carinocythereis
- Carinodrillia
- Carota
- Carpilius
- Carpilodes
- Carpocanarium
- Carpocanistrum
- Carpocanium
- Caryocorbula
- Caryophyllia
- Caryosphaera
- Casmaria
- Cassidaria
- Cassidulus
- Cassis
- Catenariopsis
- Cativella
- Caudites
- Caulastrea
- Caulophacus
- Cavilinga
- Cavolina
- Cellana
- Cellaria
- Cellarinella
- Cellepora
- Celleporaria
- Celleporella
- Celleporina
- Cementula
- Cenellipsis
- Cenocrinus
- Cenodiscus
- Cenosphaera
- Centracanthus
- Centrifuga
- Centroberyx
- Centrobotrys
- Centrocardita
- Centrophorus
- Centropristis
- Centrostephanus
- Cephalodiscus
- Cephalopyramis
- Cepola
- Cerastoderma
- Ceratia
- Ceratoporella
- Ceratoscopelus
- Ceratostoma
- Ceratotrochus
- Cerithidea
- Cerithideops
- Cerithideopsilla
- Cerithideopsis
- Cerithidium
- Cerithiella
- Cerithioclava
- Cerithiopsida
- Cerithiopsidella
- Cerithiopsis
- Cerithiscala
- Cerithium
- Certonardoa
- Chaceia
- Chaenogaleus
- Chaetopleura
- Chaeturichthys
- Chama
- Chamaesipho
- Chamelea
- Chametrachea
- Chanda
- Chaperia
- Characodoma
- Charonia
- Charybdis
- Chasmocarcinus
- Chasmotheca
- Chattonia
- Chauvetia
- Cheilea
- Cheilopora
- Cheiloporina
- Chelonibia
- Chelyconus
- Chemnitzia
- Cheramus
- Chevallieria
- Chiastolus
- Chicoreus
- Chiiengphoherus
- Chilara
- Chileutomia
- Chilomycterus
- Chiloscyllium
- Chimaera
- Chion
- Chione
- Chionelasmus
- Chioneryx
- Chionista
- Chionopsis
- Chirocentrus
- Chirona
- Chirostoma
- Chiton
- Chitonastrum
- Chitonotus
- Chladocrinus
- Chlamydoselachus
- Chlamys
- Chlathrus
- Chlidoniopsis
- Chlorodiella
- Chlorophthalmus
- Chlorostoma
- Chondrocidaris
- Chondrocladia
- Chorilia
- Chorizopora
- Chorus
- Chromis
- Chrysallida
- Chrysame
- Chrysostoma
- Chthamalus
- Cicatellia
- Cidarina
- Cidaris
- Cilara
- Ciliatocardium
- Cinclopyramis
- Cinctipora
- Cinctiscala
- Cingula
- Cingulina
- Cionobrissus
- Circe
- Circeis
- Circomphalus
- Circulus
- Cirillia
- Cirolana
- Cirsonella
- Cirsotrema
- Citharichthys
- Citharus
- Cittarium
- Cladangia
- Cladorhiza
- Cladospyris
- Clanculopsis
- Clanculus
- Clathrocyclas
- Clathrodrillia
- Clathromangelia
- Clathroscala
- Clathrospyris
- Clathrus
- Clathurella
- Claudiconcha
- Clausinella
- Clava
- Clavagella
- Clavatula
- Clavilithes
- Claviporella
- Claviscala
- Clavus
- Cleidochasma
- Cleidothaerus
- Clementia
- Cleobula
- Cleotrivia
- Cletocythereis
- Clibanarius
- Clidiophora
- Clidoderma
- Climacoidea
- Clinocardium
- Clinopegma
- Clinus
- Clio
- Cliona
- Clithrocytheridea
- Closia
- Cluthia
- Clypeaster
- Clypeola
- Clypeolum
- Clypeomorus
- Clypidina
- Cnesterium
- Cobitopsis
- Coccocyclia
- Coccodentalium
- Coccodiscus
- Coccolarcus
- Coccopigya
- Cocculina
- Cocculinella
- Cochiolepis
- Cochlespira
- Cochlodesma
- Codakia
- Codonella
- Codonellina
- Coelopleurus
- Coelopora
- Coelorhynchus
- Coeloseris
- Coelotrochus
- Coenangia
- Coenobita
- Coenocyathus
- Coleopora
- Colina
- Collarina
- Colliculus
- Collisella
- Collonista
- Colpichthyes
- Colpophyllia
- Colpospira
- Colubraria
- Colubrellina
- Columbarium
- Columbella
- Columbellopsis
- Colus
- Coluzea
- Comarmondia
- Comaster
- Cominella
- Cominista
- Cominula
- Comitas
- Compressidens
- Compsodrillia
- Compsomyax
- Comus
- Conarchnium
- Concavus
- Conchocele
- Conchoecia
- Concholepas
- Condylocardia
- Condylocuna
- Conescharellina
- Conjectura
- Conocerithium
- Conocrinus
- Conocyathus
- Conoidacmaea
- Conolithes
- Conominolia
- Conomurex
- Conopeum
- Conopora
- Conosphaera
- Conotrochus
- Conuber
- Conus
- Convexopecten
- Cookia
- Cooperella
- Copidozoum
- Coptothyris
- Copytus
- Coralliophaga
- Coralliophila
- Corallistes
- Corallium
- Corallospondylus
- Corbicula
- Corbula
- Cordieria
- Coriandria
- Coripia
- Cornucoquimba
- Cornutella
- Cornuticella
- Corocalyptra
- Coroniscala
- Coronula
- Corophiidae
- Cortina
- Cortiniscus
- Coryphaenoides
- Coryphopterus
- Cosa
- Coscinaraea
- Cosciniopsis
- Coscinospongia
- Cosmetalepas
- Cossmannea
- Cossmannica
- Costa
- Costacallista
- Costatoleda
- Costazia
- Costellaria
- Costellipitar
- Costokidderia
- Cothurnicella
- Cotonopsis
- Cottonia
- Cottopsis
- Couthouyia
- Coxiella
- Crania
- Craniella
- Craniscus
- Cranopsis
- Cranosina
- Craspedochiton
- Crassadoma
- Crassatellites
- Crassatina
- Crassilabrum
- Crassimarginatella
- Crassinella
- Crassispira
- Crassispirella
- Crassopleura
- Crassostrea
- Crateromorpha
- Crateropora
- Cratis
- Crawfordina
- Crebriscala
- Cremides
- Crenatula
- Crenella
- Crenidens
- Crenilabium
- Crenomytilus
- Crenulilimopsis
- Crepidacantha
- Crepidula
- Crepipatella
- Crepis
- Creseis
- Creusia
- Cribella
- Cribellopora
- Cribraria
- Cribrilaria
- Cribrilina
- Crisia
- Crisidia
- Crisiella
- Crisiona
- Crisisina
- Crisulipora
- Cromyodruppa
- Cromyomma
- Cronia
- Crossata
- Crossea
- Crosseola
- Crucibulum
- Cryptobranchia
- Cryptocapsa
- Cryptocephalus
- Cryptochiton
- Cryptoconchus
- Cryptolepas
- Cryptomella
- Cryptomya
- Cryptonatica
- Cryptopecten
- Cryptoplax
- Cryptopora
- Cryptospira
- Cryptosula
- Ctena
- Ctenactis
- Ctenoberyx
- Ctenocardia
- Ctenocheles
- Ctenocolpus
- Ctenoides
- Ctenophoraster
- Ctenosciaena
- Cubestana
- Cubiceps
- Cubiculovinea
- Cucullaea
- Cucullaearca
- Cucumarites
- Culicia
- Cultellus
- Cumingia
- Cuna
- Cunanax
- Cunearca
- Cuneus
- Cupidoliva
- Cupuladria
- Cushmanidea
- Cuspidaria
- Cuvierina
- Cyamiomactra
- Cyanocyclas
- Cyanoplax
- Cyathelia
- Cyathidium
- Cyathoceras
- Cyathodonta
- Cyathotrochus
- Cycladicama
- Cycladophora
- Cyclampterium
- Cyclaster
- Cyclastrum
- Cyclicopora
- Cyclina
- Cyclinella
- Cyclocardia
- Cyclochlamys
- Cyclodostomia
- Cycloes
- Cyclomactra
- Cyclope
- Cyclopecten
- Cycloperiella
- Cyclopoma
- Cyclopterus
- Cycloscala
- Cycloseris
- Cyclostrema
- Cyclostremela
- Cyclostremiscus
- Cyclostromella
- Cyclosuneta
- Cyclotellina
- Cyclothone
- Cyclothyca
- Cycloxanthops
- Cylichna
- Cylichnatys
- Cylichnella
- Cylichnina
- Cylinder
- Cylindriscala
- Cylindromitra
- Cylindrophyllia
- Cyllene
- Cymatiella
- Cymatium
- Cymatogaster
- Cymatoica
- Cymatophos
- Cymatosyrinx
- Cymbiola
- Cymbium
- Cymia
- Cymodoce
- Cynisca
- Cynoscion
- Cyphastraea
- Cyphoma
- Cyphonochelus
- Cypraea
- Cypraecassis
- Cypraeerato
- Cyprideis
- Cypridina
- Cypridopsis
- Cyrenobatissa
- Cyrenodonax
- Cyrtocalpis
- Cyrtocapsa
- Cyrtodaria
- Cyrtopinna
- Cyrtopleura
- Cyrtorhina
- Cystisella
- Cystodytes
- Cythara
- Cytharella
- Cytheralison
- Cytherella
- Cytherelloidea
- Cytheretta
- Cytheridea
- Cytherois
- Cytheroma
- Cytheromorpha
- Cytheropteron
- Cytherura
D
- Dacrydium
- Dactylidella
- Dactylidia
- Dactylocalyx
- Daira
- Dakaria
- Dalatias
- Dallina
- Dallinella
- Dallitesta
- Dallithyris
- Dallocardia
- Damalichthys
- Danaphos
- Dannevigia
- Daphnella
- Darbya
- Dardanula
- Dardanus
- Daronia
- Dasmosmilia
- Deania
- Decapterus
- Decatopecten
- Decipula
- Delectopecten
- Delphinapterus
- Deltentosteus
- Deltocyathus
- Deminucula
- Democrinus
- Demoulia
- Dendostrea
- Dendraster
- Dendrocircus
- Dendroconus
- Dendrogyra
- Dendrophyllia
- Dendrospyris
- Dentalium
- Dentex
- Dentiporella
- Dentiscala
- Dentistyla
- Depressiscala
- Dermatopsis
- Dermomurex
- Derstolida
- Desmana
- Desmatelesia
- Desmechinus
- Desmediaperoecia
- Desmeplatioecia
- Desmophyllum
- Desmospyris
- Diacria
- Diadema
- Diala
- Diaphana
- Diaphus
- Diastoma
- Dibaphimitra
- Dibaphus
- Diberus
- Dibranchus
- Dibunostoma
- Dichocoenia
- Dicolocapsa
- Dicologoglossa
- Dicranastrum
- Dictyastrum
- Dictyocephalus
- Dictyocoryne
- Dictyomitra
- Dictyophimus
- Dictyopodium
- Dictyospyris
- Dictyothurites
- Didimacar
- Didymocyrtis
- Didymosella
- Dientomochilus
- Diestothyris
- Dightonia
- Digitaria
- Diloma
- Diminovula
- Dimorphocella
- Dimya
- Dinocardium
- Diodon
- Diodora
- Diplacanthopoma
- Diplactura
- Diploastrea
- Diplocrinus
- Diplodonta
- Diplodus
- Diplomeriza
- Diploplegma
- Diploporaster
- Diploria
- Diplorula
- Diplosolen
- Dipodospyris
- Dipulus
- Diretmus
- Dischides
- Discinisca
- Discodermia
- Discoporella
- Discopsis
- Discoscala
- Discotectonica
- Discradisca
- Disolenia
- Disporella
- Dispotaea
- Distansescharella
- Distichopora
- Distorsio
- Distriactis
- Ditrupa
- Divalinga
- Divalucina
- Divaricella
- Dizoniopsis
- Docomphala
- Dodecaceria
- Dolabella
- Dolichozygus
- Dolichupis
- Dolicrassea
- Doliella
- Dolomena
- Donax
- Dorcadospyris
- Dorippe
- Dorocidaris
- Dorsanum
- Dorsina
- Dorvillea
- Dosidicus
- Dosima
- Dosina
- Dosinella
- Dosinia
- Dosinorbis
- Dostia
- Doxander
- Drillia
- Drilliola
- Drilonereis
- Dromia
- Drupa
- Druppatractus
- Druppocarpus
- Druppula
- Duncanopsammia
- Dungulia
- Dunkeria
- Duplicaria
- Dutoitella
- Dyscolia
- Dysidea
E
- Eamesiella
- Eastonia
- Eatoniella
- Ebala
- Ebalia
- Eburna
- Echelus
- Echinarachnius
- Echinaster
- Echinellopsis
- Echininus
- Echinocardium
- Echinocyamus
- Echinocythereis
- Echinodiscus
- Echinolampas
- Echinometra
- Echinomma
- Echinoneus
- Echinophoria
- Echinophyllia
- Echinopora
- Echinorhinus
- Echinostrephus
- Echiodon
- Edwardsotrochus
- Egesta
- Egestas
- Egilina
- Eglisia
- Egracina
- Elachorbis
- Elaeocyma
- Electra
- Electroma
- Electrona
- Elegantiscala
- Elegantula
- Elephantanellum
- Elephas
- Ellatrivia
- Ellicea
- Ellipsidium
- Ellipsostylus
- Ellipsoxiphus
- Ellisina
- Elminius
- Elofsonella
- Elofsonia
- Elops
- Elysiacea
- Emarginula
- Emarginulina
- Emballotheca
- Emmelichthys
- Empleconia
- Enaeta
- Enallopsammia
- Enatimene
- Encope
- Endopachys
- Engina
- Enhydriodon
- Enida
- Enigmonia
- Ennucula
- Enophrys
- Enoplostomella
- Enoplosus
- Ensiculus
- Ensis
- Ensisolen
- Ensitellops
- Entalina
- Entalophora
- Entalophoroecia
- Entemnotrochus
- Entomaria
- Eocaudina
- Eohemithiris
- Eomiltha
- Eomyrophis
- Eonavicula
- Eontia
- Eopaijenborchella
- Eopsetta
- Eosipho
- Epheria
- Epialtus
- Epicodakia
- Epideira
- Epidirella
- Epidirona
- Epilucina
- Epinnula
- Epiphaxum
- Episcynia
- Episiphon
- Epitonium
- Epopella
- Equichlamys
- Erato
- Eratoidea
- Eratopsis
- Erbechinus
- Erginus
- Ericusa
- Eriphia
- Erodona
- Erosaria
- Errina
- Erronea
- Ervilia
- Erycinella
- Erylus
- Escharella
- Escharina
- Escharoides
- Eschrichtius
- Estea
- Etallonia
- Ethalia
- Etisus
- Etmopterus
- Etrema
- Etrumeus
- Eubalaena
- Eubela
- Eucalathis
- Eucallista
- Eucecryphalus
- Euchelus
- Euchitonia
- Eucidaris
- Euclia
- Eucominia
- Eucopia
- Eucoronis
- Eucrassatella
- Eucratea
- Eucyrtidium
- Eucythere
- Eucytherura
- Eudolium
- Eudoxochiton
- Eufistulana
- Eugabrielona
- Euleptorhamphus
- Eulichthys
- Eulima
- Eulimastoma
- Eulimella
- Eumarcia
- Eumetopias
- Eumetula
- Eumitra
- Eunaticina
- Euninella
- Euparthenia
- Eupatagus
- Euphylax
- Euphyllia
- Euphyllon
- Euplectella
- Eupleura
- Euplica
- Euprognatha
- Euprotomus
- Eupsammia
- Eurete
- Eurhomalea
- Euriclanculus
- Eurissolina
- Euryplax
- Eurysina
- Eurystomella
- Eurystrotos
- Eurytellina
- Eurytium
- Euscalpellum
- Euseila
- Eusmilia
- Euspira
- Eusthenotrochus
- Eustrombus
- Eusyringium
- Euthria
- Euthymella
- Euthynnus
- Eutrigla
- Euvola
- Evalea
- Evarnula
- Evechinus
- Evermanella
- Exallias
- Excellichlamys
- Exechonella
- Exidomonea
- Exiloidea
- Exlinella
- Exochella
- Exomiliopsis
- Exosiperna
- Exotica
F
- Fabella
- Fabulina
- Falsifusus
- Falsocythere
- Falunia
- Faorina
- Farrea
- Fartulum
- Fasciculipora
- Fasciolaria
- Fastigiella
- Fautor
- Favartia
- Faveolebris
- Favia
- Favites
- Fax
- Felaniella
- Felicia
- Fellaster
- Fenestrosyrinx
- Fenestrulina
- Fibularia
- Fictonoba
- Ficus
- Figularia
- Filicrisia
- Filifascigera
- Filisparsa
- Filodrilla
- Filograna
- Filogranula
- Fimbria
- Finlayola
- Finmarchinella
- Fissidentalium
- Fissurella
- Fissurellidea
- Fissurisepta
- Fistularia
- Fistulobalanus
- Flabelligerid
- Flabellipecten
- Flabellopora
- Flabellum
- Flexopecten
- Flexus
- Floridina
- Floridinella
- Florimetis
- Flustrella
- Foegia
- Folina
- Foratiscala
- Forcepia
- Forreria
- Forskaelena
- Fossacallista
- Fossarius
- Fossatrivia
- Foveoleberis
- Fragum
- Frenula
- Frigidocardium
- Friginatica
- Frondipora
- Fugleria
- Fulcrella
- Fulgoraria
- Fulgurofusus
- Fulvia
- Fungia
- Fungiacava
- Fungiacyathus
- Fuscibuccinum
- Fuscoscala
- Fusinus
- Fusitriton
- Fusiturricula
- Fusiturris
- Fusoterebra
- Fustiaria
- Fusus
G
- Gabrielona
- Gadiculus
- Gadila
- Gadilina
- Gadomus
- Gafrarium
- Gaidropsarus
- Gaimardia
- Galathea
- Galaxea
- Galene
- Galeodea
- Galeodina
- Galeolaria
- Galeoocorys
- Ganesa
- Gardineroseris
- Gargantua
- Gari
- Garnotia
- Gastrana
- Gastrochaena
- Gaudryanella
- Gegania
- Gelagna
- Geleorhinus
- Geloina
- Gemellipora
- Gemelliporidra
- Gemelliporina
- Gemma
- Gemmoliva
- Gemmula
- Genaxinus
- Genkaimurex
- Genota
- Genyonemus
- Genypterus
- Geodia
- Georgia
- Gephyroberyx
- Gephyrophora
- Gephyrotes
- Gerres
- Geryon
- Gibberula
- Gibberulina
- Gibberulus
- Gibbolucina
- Gibbomodiola
- Gibbula
- Gigantopora
- Ginebis
- Ginglymostoma
- Giraffospyris
- Glabella
- Glabropilumus
- Glans
- Glaphyrina
- Glaucosoma
- Globicephala
- Globisinum
- Globivenus
- Globularia
- Gloripallium
- Glossaulax
- Glossus
- Glottidia
- Glycera
- Glycobtrys
- Glycydonta
- Glycymerella
- Glycymeris
- Glycymerula
- Glyphostoma
- Glyphoturris
- Glypotocidaris
- Glyptocephalus
- Glyptophidium
- Glyptozaria
- Gnathophis
- Gnidiella
- Gobraeus
- Goethemia
- Gomphina
- Gomphinella
- Goneplax
- Goniada
- Goniastrea
- Gonilia
- Gonimyrtea
- Goniocheila
- Goniocidaris
- Goniopora
- Gonodactylus
- Gonostoma
- Goodallia
- Goreauiella
- Gorgospyris
- Gougerotia
- Gouldia
- Gourmya
- Gracilechinus
- Gracilipurpura
- Gracilispira
- Grammatodonax
- Grammatorcynus
- Grandaxinea
- Grandiarca
- Granosolarium
- Granula
- Granulina
- Granulittorina
- Granulolabium
- Graphiocomassa
- Graptacme
- Graviscalpellum
- Gregariella
- Gregorioiscala
- Gryphus
- Guildfordia
- Guildingia
- Gumina
- Guraleus
- Gutturnium
- Guynia
- Gwynia
- Gymnocrinus
- Gymnosarda
- Gymnoscopelus
- Gymnura
- Gyrineum
- Gyroscala
- Gyrothyris
H
- Hadriania
- Halia
- Halicalyptra
- Halice
- Halina
- Haliomma
- Haliophis
- Haliotis
- Haliphoebus
- Haliphormis
- Halistylus
- Halla
- Haloginella
- Halomitra
- Halonympha
- Hamacantha
- Hamacuna
- Haminoea
- Hanaiborchella
- Hanaiceratina
- Hanetia
- Hanleya
- Hapalorbis
- Haplocochlias
- Haplocytheridea
- Haplopoma
- Harengula
- Harfordia
- Harmeriella
- Harpa
- Harpago
- Harpella
- Harpula
- Hastula
- Hatasia
- Haumea
- Haurakia
- Haustator
- Haustellum
- Haustrum
- Hawaiarca
- Hebeseila
- Hebra
- Heida
- Heilprinia
- Heinia
- Helcion
- Heliacus
- Heliaster
- Heliocidaris
- Heliocladus
- Heliodiscus
- Heliofungia
- Heliophora
- Heliopora
- Helioseris
- Heliosoma
- Heliosphaera
- Helix
- Helixotionella
- Helloceras
- Helotholus
- Hemerocoetes
- Hemiacirsa
- Hemiaster
- Hemicerithium
- Hemiconus
- Hemicosciniopsis
- Hemicyclopora
- Hemicythere
- Hemicytherura
- Hemidonax
- Hemifusus
- Hemikrithe
- Hemimactra
- Hemipecten
- Hemiplax
- Hemipristis
- Hemiscyllium
- Hemiseptella
- Hemisquilla
- Hemithiris
- Hemithyrsites
- Hemitoma
- Henricia
- Henryhowella
- Hepatella
- Hepatus
- Heptranchias
- Herbstia
- Hercothyris
- Here
- Herentia
- Hermania
- Hermanites
- Herpetopoma
- Herpolitha
- Hesperaster
- Hespererato
- Hesperibalans
- Heteractaea
- Heterobrissus
- Heterocentrotus
- Heterocithara
- Heteroclidus
- Heterocrypta
- Heterocyathus
- Heterocyprideis
- Heterocythereis
- Heterodonax
- Heterodontus
- Heteromacoma
- Heterometra
- Heteropora
- Heteropsammia
- Heterotrichina
- Hexacontium
- Hexacorbula
- Hexacromyum
- Hexactinella
- Hexaloncharium
- Hexalonche
- Hexanchus
- Hexaplex
- Hexapus
- Hexaspyris
- Hexastylarium
- Hexastylus
- Hexelasma
- Hiantopora
- Hiatella
- Hiatula
- Hildebrandia
- Himerometra
- Hincksina
- Hincksipora
- Hinia
- Hinnites
- Hippadenella
- Hippaliosina
- Hippodiplosia
- Hippoglossoides
- Hippomenella
- Hippomonavella
- Hipponix
- Hippopleurifera
- Hippopodina
- Hippopodinella
- Hippoporella
- Hippoporidra
- Hippoporina
- Hippopus
- Hippothoa
- Hiromurex
- Hirschmannia
- Hirsutocythere
- Hirtoscala
- Hispidopetra
- Histiastrum
- Histocidaris
- Holcotrochus
- Holocentrus
- Holoporella
- Holopus
- Homalina
- Homalopoma
- Homolodromia
- Homophyllia
- Hoplichthys
- Hoplobrotula
- Hoplocheilina
- Hoplunnis
- Hormerella
- Hormomya
- Hornera
- Hulingsina
- Humilaria
- Hunkydora
- Hupea
- Huso
- Huxleyia
- Hyala
- Hyalina
- Hyalocylis
- Hyalonemia
- Hyalopecten
- Hyalorisia
- Hyaloscala
- Hyas
- Hyastenus
- Hybochelus
- Hybolophus
- Hydnophora
- Hydractinia
- Hydrallmania
- Hydrodamalis
- Hydroides
- Hygophum
- Hymenactura
- Hymeniastrum
- Hymenocephalus
- Hyotissa
- Hypacanthus
- Hypanis
- Hyperoglyphe
- Hyperoplus
- Hyperprosopon
- Hypocassis
- Hypomesus
- Hyporhamphus
- Hyporosopora
- Hypotrichina
- Hypterita
- Hysteroconcha
I
- Iacra
- Icelinus
- Ichthyococcus
- Idasola
- Idiotrochus
- Idmidronea
- Idmonea
- Idmoneoides
- Ilanga
- Ilba
- Ilia
- Iliochione
- Illyanassa
- Imbricaria
- Immergentia
- Inachus
- Indocerithium
- Infundibulipora
- Infundibulops
- Inglisella
- Inquisitor
- Inversiula
- Iolaea
- Iophon
- Iothia
- Iphiana
- Iphiculus
- Iphigenia
- Iravadia
- Iredalina
- Iredalula
- Irus
- Irusella
- Isacia
- Isanda
- Ischadium
- Ischnochiton
- Iselica
- Ishnula
- Isïphyllastrea
- Isis
- Isistius
- Isocrassina
- Isocrinus
- Isognomon
- Isogomphodon
- Isophyllia
- Isopsetta
- Isselia
- Ithycythara
- Itia
- Ivara
- Ividella
- Ixa
- Ixoides
J
- Jacksonaster
- Jaculina
- Janacus
- Janita
- Janthina
- Japanithyris
- Japelion
- Japonoconger
- Jasus
- Jaton
- Javanella
- Jaxea
- Jeffreysina
- Jenneria
- Jesonia
- Jolonica
- Jonesia
- Josepha
- Josephella
- Jouannetia
- Jugosocythereis
- Jujubinus
- Julia
- Juliacorbula
- Jumala
- Jupiteria
K
- Kalayoldia
- Kangarina
- Katelysia
- Katharina
- Katherinella
- Keenaea
- Keenocardium
- Kelletia
- Kellia
- Kelliella
- Kenella
- Kereia
- Kermadysmea
- Kidderia
- Kikaiarca
- Kionotrochus
- Kleinacteon
- Knefastia
- Kobayashiina
- Kogia
- Korovinia
- Kraussina
- Krebsia
- Krithe
- Kryptophaneron
- Kuhlia
- Kuroshioturris
- Kurtziella
- Kyphosida
L
- Labioporella
- Labiostrombus
- Labis
- Labrisomus
- Labrodon
- Labrus
- Lacazella
- Lacerna
- Laciolina
- Lacrimula
- Laculina
- Lacuna
- Laemonema
- Laetifautor
- Laevicardium
- Laevichlamys
- Laevicirce
- Laevicordia
- Laevidentalium
- Laevistrombus
- Laganum
- Lagarozoum
- Lagenipora
- Laiocochlis
- Lajonkairia
- Lambis
- Lamellaria
- Lamelliconcha
- Lamellinucula
- Laminopora
- Lamna
- Lampadena
- Lampanella
- Lampanyctodes
- Lampanyctus
- Lampasopsis
- Lampichthyes
- Lampris
- Lamprocyclas
- Lamprocyrtis
- Lamprodoma
- Lampusia
- Lanceopora
- Laqueus
- Larcidium
- Larcopyle
- Larcospira
- Larimus
- Larkinia
- Larnacalpis
- Larnacantha
- Lasaea
- Laternula
- Lathyrulus
- Latiaxis
- Latifusus
- Latirolagena
- Latirus
- Latisipho
- Latona
- Latrunculia
- Lautoconus
- Lazariella
- Ledella
- Lefroyella
- Leiodermatium
- Leiolambrus
- Leionucula
- Leiopathes
- Leiopyrga
- Leiosella
- Leiosolenus
- Leiostraca
- Lekythopora
- Lembulus
- Lemintina
- Lenitrophon
- Lentidium
- Lentigo
- Leochlamys
- Leodia
- Leopecten
- Lepas
- Lepeta
- Lepetella
- Lepidion
- Lepidocardia
- Lepidochitona
- Lepidocottus
- Lepidopleurus
- Lepidopus
- Lepidorhombus
- Lepidotrigla
- Lepidozona
- Lepophidium
- Leporemax
- Leporicypraea
- Leporimetis
- Lepralia
- Lepsithais
- Leptadrillia
- Leptastrea
- Leptaxinus
- Leptegauana
- Leptochiton
- Leptoconus
- Leptomithrax
- Leptomya
- Lepton
- Leptopecten
- Leptoria
- Leptoscopus
- Leptoseris
- Leptothyra
- Leptothyropsis
- Lestidiops
- Lethops
- Leuconia
- Leucorhynchia
- Leucosilia
- Leucosyrinx
- Leucozonia
- Leufroyia
- Leuresthes
- Levenia
- Libinia
- Lichenopora
- Lienardia
- Ligatella
- Lilax
- Liloa
- Lima
- Limacina
- Limanda
- Limaria
- Limatuella
- Limatula
- Limea
- Limneria
- Limopsis
- Limulatys
- Linatella
- Linckia
- Lindisfarnia
- Linemera
- Linga
- Lingula
- Liniaxis
- Linopyrga
- Linucula
- Linuparus
- Lioberus
- Liocerithium
- Lioconcha
- Liocyma
- Lioglyphostoma
- Liomesus
- Liosphaera
- Liotella
- Liothyrella
- Liotia
- Liotina
- Lippistes
- Lirachiton
- Liracraea
- Lirastrombina
- Liratilia
- Liriospyris
- Liripora
- Lirobittium
- Lirocingula
- Lironoba
- Lirophora
- Lirularia
- Lischkeia
- Lissarca
- Lissopecten
- Lissospira
- Lissotesta
- Lissotestella
- Lithapium
- Lithatractus
- Lithelius
- Lithobotrys
- Lithocampe
- Lithocarpium
- Lithochytris
- Lithoconus
- Lithocyclia
- Lithognathus
- Lithomelissa
- Lithomespilus
- Lithomitra
- Lithopera
- Lithophaga
- Lithophyllon
- Lithopoma
- Lithornithium
- Lithostrobus
- Litigiella
- Litiopa
- Littoraria
- Littorina
- Littorinopsis
- Littorniscala
- Livonia
- Lobantale
- Lobianchia
- Lobophyllia
- Loculicytheretta
- Lodderena
- Lodderia
- Loligo
- Lonchistium
- Longchaeus
- Longicerithium
- Longimactra
- Lopha
- Lophaster
- Lophelia
- Lophioturris
- Lophius
- Lophocardium
- Lophocochlias
- Lophoconus
- Lophocorys
- Lophocyrtis
- Lophogaster
- Lophopanopeus
- Lophophaena
- Lophophyllia
- Lophosmilia
- Lophospyris
- Lorica
- Loricella
- Loripes
- Loripinus
- Lottia
- Lovenia
- Loxoconcha
- Loxoconchella
- Loxocorniculum
- Loxoglypta
- Loxorhynchus
- Lucapina
- Lucapinella
- Lucerapex
- Lucidestea
- Lucina
- Lucinella
- Lucinisca
- Lucinoma
- Luidia
- Lumbriconereis
- Lunarca
- Lunatia
- Lunatica
- Lundomys
- Lunella
- Lunulicardia
- Luria
- Lutraria
- Luvarus
- Luvula
- Lychnocanium
- Lychnodictyum
- Lycodopsis
- Lyconectes
- Lydiphnis
- Lyidium
- Lyncina
- Lyonsia
- Lyopsetta
- Lyratellina
- Lyreidus
- Lyria
- Lyrocardium
- Lyrodobankia
- Lyromangelia
- Lysiosquilla
- Lytechinus
M
- Mabellarca
- Macalia
- Macandrevia
- Macandrewia
- Maccullochella
- Machaerodonax
- Macoma
- Macomona
- Macoploma
- Macridiscus
- Macrocallista
- Macrocheira
- Macrocypraea
- Macrocyprina
- Macrocypris
- Macromphalus
- Macron
- Macroniscus
- Macrophthalmus
- Macropipus
- Macropneustes
- Macropora
- Macrosinus
- Macrozafra
- Macruronus
- Mactra
- Mactrellona
- Mactrinula
- Mactromeris
- Madiella
- Madracis
- Madrepora
- Maeandropolydora
- Magadina
- Magadinella
- Magasella
- Magellania
- Magilus
- Maja
- Makaira
- Makiyamaia
- Malacocottus
- Malea
- Malletia
- Mallotus
- Malluvium
- Malvufundus
- Malzella
- Mamillopora
- Mammilla
- Manatus
- Manawatawhia
- Mancikellia
- Mangelia
- Mangiliella
- Manicina
- Manta
- Manupecten
- Manzonia
- Maoricardium
- Maoricolpus
- Maoricrypta
- Maorimactra
- Maorithyas
- Maoritomella
- Marchia
- Marcia
- Maretia
- Marevalvata
- Margarella
- Margarites
- Marginella
- Margineulima
- Marinauris
- Marmarostoma
- Marosichthys
- Marshallena
- Marsupina
- Martesia
- Massyla
- Mastigophorella
- Mastygocercus
- Matarchia
- Mathilda
- Matuta
- Maulisia
- Maurea
- Mauritia
- Maurolicus
- Maxwellia
- Meandrina
- Mecoliotia
- Mecynoecia
- Medaeus
- Mediargo
- Mediaster
- Megabalanus
- Megacardita
- Megacrenella
- Megalatractus
- Megalomphalus
- Megalops
- Megangulus
- Megapitaria
- Megaptera
- Megastomia
- Megasurcula
- Megatebennus
- Megathura
- Megathyris
- Megaxinus
- Megayoldia
- Megerlia
- Megerlina
- Meiocardia
- Meioceras
- Melagraphia
- Melamphaes
- Melanatria
- Melanella
- Melanogrammus
- Melanonus
- Melapium
- Melaraphe
- Melatoma
- Melaxinaea
- Melita
- Melithaea
- Melittosphaera
- Mellita
- Mellitella
- Melliteryx
- Melonanchora
- Melongena
- Membranipora
- Membraniporella
- Membraniporidra
- Mene
- Menestho
- Menidia
- Menippe
- Menticirrhus
- Meoma
- Mercenaria
- Mercierella
- Merelina
- Meretrix
- Merica
- Mericella
- Merisca
- Merlangius
- Merlia
- Merluccius
- Merulina
- Mesalia
- Mesenteripora
- Mesodesma
- Mesolasma
- Mesonea
- Mesopeplum
- Mesopleura
- Mesoplodon
- Mesorhoea
- Mesoscalpellum
- Mesostomaria
- Metacrinus
- Metacytheropteron
- Metalaeospira
- Metalia
- Metanephrops
- Metavermilia
- Metaxia
- Metrarabdotos
- Metschnikowia
- Metula
- Mexicardia
- Micantapex
- Micrabacia
- Micranellium
- Micraseites
- Micrelenchus
- Microcallista
- Microcardium
- Microchirus
- Microcirce
- Microcubus
- Microcyphus
- Microcythere
- Microcytherura
- Microdrillia
- Microecia
- Microfragum
- Microfusus
- Microgadus
- Microgaza
- Microloripes
- Micromeris
- Micromesistius
- Micropora
- Microporella
- Microporina
- Microstagon
- Microstelma
- Microstomus
- Microthyca
- Microvoluta
- Microxestolebris
- Mikadotrochus
- Milda
- Millepes
- Millepora
- Milneria
- Miltha
- Mimachlamys
- Minnivola
- Minolia
- Minutiscala
- Miocenebra
- Miodontiscus
- Miomelon
- Mirachelus
- Miracythere
- Miralda
- Mirapecten
- Mistostigma
- Mitra
- Mitracalpis
- Mitraria
- Mitrax
- Mitrella
- Mitrithara
- Mitrolumna
- Mitromorpha
- Mitsukurina
- Mizuhopecten
- Mnestia
- Mobula
- Modelia
- Modiolarca
- Modiolatus
- Modiolula
- Modiolus
- Modiolusia
- Modulus
- Moelleria
- Moerella
- Moira
- Moiropsis
- Mola
- Mollia
- Molva
- Monachocrinus
- Monachus
- Monetaria
- Monia
- Monilea
- Moniliopsis
- Monitilora
- Monocentris
- Monochirus
- Monodaeus
- Monodilepas
- Monodonta
- Monolene
- Monomitopus
- Monomyces
- Monoplex
- Monoporella
- Monothyra
- Montacuta
- Montastrea
- Montfortia
- Montfortula
- Montipora
- Mopsea
- Morchiella
- Mormula
- Morone
- Moroteuthis
- Morula
- Morum
- Morunella
- Muconalia
- Mucronella
- Mugil
- Mulinia
- Mullus
- Munditia
- Munditiella
- Munida
- Munidopsis
- Munseyella
- Mupus
- Muraena
- Muraenesox
- Murchisonella
- Muregina
- Murex
- Murexiella
- Murexsul
- Muricanthus
- Muricassis
- Muricopsis
- Murravia
- Mursia
- Musculista
- Musculus
- Mussa
- Mussisíilia
- Mustelus
- Mutilus
- Mya
- Myadora
- Myadoropsis
- Myapalmula
- Mycedium
- Mycetophyllia
- Myctophum
- Myelastrum
- Myliobatis
- Myliusia
- Myllita
- Myllitella
- Myochama
- Myoforceps
- Myra
- Myrakeena
- Myriapora
- Myriozoum
- Myripristis
- Myristica
- Myroconger
- Myrtea
- Mysella
- Mysia
- Mysidae
- Mystriophis
- Mytella
- Mytilaster
- Mytilisepta
- Mytilus
- Myurella
- Myurellina
- Myxilla
N
- Nacca
- Nacella
- Nannamoria
- Nannodiella
- Nanopitar
- Nansenia
- Naquetia
- Narcine
- Naricava
- Narona
- Nassa
- Nassaria
- Nassarina
- Nassarius
- Natica
- Naticarius
- Nautilus
- Neaeromya
- Neanthias
- Nebris
- Nebrius
- Nebularia
- Negaprion
- Neilo
- Neilonella
- Neliella
- Nellia
- Nemaster
- Nemocardium
- Neobernaya
- Neobythites
- Neocaudites
- Neocrania
- Neocrinus
- Neocylindrus
- Neocytheretta
- Neocytherideis
- Neodexiospira
- Neogaimardia
- Neoguraleus
- Neojanacus
- Neolepton
- Neomicrorbis
- Neomonoceratina
- Neonesidea
- Neopelta
- Neophoca
- Neopilumnoplax
- Neoplatycephalus
- Neopycnodonte
- Neoscalpellum
- Neoscombrops
- Neosemantis
- Neosimnia
- Neotapes
- Neothyris
- Neotrapezium
- Neotrigonia
- Neovermilia
- Neozeba
- Nephrops
- Nephropsis
- Nephrospyris
- Nephthea
- Nepotilla
- Neptocarcinus
- Neptunea
- Nereina
- Nerita
- Neritina
- Neritopsis
- Neritrema
- Nerophis
- Nesobornia
- Netastoma
- Nettastoma
- Nettastomella
- Nevenulora
- Neverita
- Nevianopora
- Nezumia
- Nicania
- Nicella
- Nihonia
- Nina
- Ninella
- Niotha
- Nipponithyris
- Nipponolimopsis
- Nisiturris
- Niso
- Nisostomia
- Nitidella
- Nitidiscala
- Nitidotellina
- Niveria
- Nodilittorina
- Nodipecten
- Nodiscala
- Noditerebra
- Nodulus
- Noetia
- Noetiella
- Normanicythere
- Norrisia
- Northia
- Notacanthus
- Notadusta
- Notesthes
- Notirus
- Notoacmea
- Notobotula
- Notocallista
- Notochione
- Notochlamy
- Notocidaris
- Notocirrus
- Notocorbula
- Notocrater
- Notocrinus
- Notocyathus
- Notocypraea
- Notocytharella
- Notohaliotis
- Notolampas
- Notolepis
- Notolimea
- Notomella
- Notomithrax
- Notopaphia
- Notopeplum
- Notophyllia
- Notoplax
- Notopoides
- Notopus
- Notorhynchus
- Notosaria
- Notosceles
- Notoscopelus
- Notoscrobs
- Notoseila
- Notosetia
- Notosinister
- Notostomus
- Nototeredo
- Notovola
- Notovoluta
- Novathaca
- Nozeba
- Nucella
- Nucia
- Nucinella
- Nuclearia
- Nucula
- Nuculana
- Nudechinus
- Nullamphiura
- Numella
- Nutricola
- Nuttallia
- Nuttallina
- Nymphaster
O
- Oamaruia
- Obex
- Obexomia
- Oblada
- Oblitacythereis
- Obtortio
- Obtusella
- Occultocythereis
- Ocenebra
- Ochetoclava
- Ocinebrellus
- Ocinebrina
- Octotympanum
- Oculina
- Ocypode
- Odobenus
- Odontaspis
- Odontaster
- Odontionella
- Odontocyathus
- Odostomella
- Odostomia
- Oenopota
- Offadesma
- Ogcocephalus
- Ogilbia
- Ogivalia
- Ogivia
- Oligoplites
- Oligopus
- Oliva
- Olivancillaria
- Olivella
- Olivia
- Olssonella
- Omalogyra
- Omalosecosa
- Ommatartus
- Ommatocampe
- Ommatocarcinus
- Ommatodiscus
- Ommatospyris
- Omogymna
- Omphalius
- Omphalotropis
- Oncorhynchus
- Oncousoecia
- Oniscidia
- Onithochiton
- Onoba
- Onuphis
- Onuxodon
- Onychocella
- Oocorys
- Oostrombus
- Opalia
- Opaliopsis
- Opechinus
- Ophiacantha
- Ophidion
- Ophiocnida
- Ophiocoma
- Ophiocrossota
- Ophiocten
- Ophiodermella
- Ophiodon
- Ophiomusium
- Ophisthoproctus
- Ophisurus
- Ophiura
- Ophryotrocha
- Opimilda
- Opisthonema
- Oplegnathus
- Oplophorus
- Oppenheimopecten
- Optivus
- Orbitestella
- Orcinus
- Orectospira
- Orinella
- Orionina
- Ornamentaria
- Ornaticannula
- Orobitella
- Orostaurs
- Orthopristis
- Orthoyoldia
- Osilinus
- Osmerus
- Ossiania
- Osthimosia
- Ostomya
- Ostracion
- Ostracoberyx
- Ostrea
- Ostreola
- Otaria
- Otatara
- Otionella
- Otopleura
- Otukaia
- Oudardia
- Oulangia
- Oulastrea
- Oulophyllia
- Ovalipes
- Ovatipsa
- Ovilia
- Ovinotis
- Ovirissoa
- Ovulactaeon
- Oxygyrus
- Oxyjulis
- Oxymeris
- Oxynaspis
- Oxynotus
- Oxyperas
- Oxystele
- Ozius
P
- Pacambocythere
- Pachastrella
- Pachycymbiola
- Pachydesma
- Pachykellya
- Pachylasma
- Pachymelon
- Pachyrissoina
- Pachyseris
- Pachysyrnola
- Pacipecten
- Pagellus
- Pagodula
- Pagrus
- Paguristes
- Pagurus
- Paijenborchella
- Paijenborchellina
- Palaega
- Palaemon
- Palaeocytheridea
- Palaeostoma
- Paleopneustes
- Palinurus
- Pallacera
- Palliolum
- Palmadusta
- Palmenella
- Palmicellaria
- Palmoconcha
- Palomelon
- Panamurex
- Pandora
- Pandorella
- Panomya
- Panopea
- Panopeus
- Panormella
- Pantellaria
- Panthera
- Panturichthys
- Paphia
- Paphies
- Paphirus
- Papillicardium
- Papyridea
- Paraclathurella
- Paracomitas
- Paraconcavus
- Paraconger
- Paracyathus
- Paracyprideis
- Paracypris
- Paracythere
- Paracytheridea
- Paracytherois
- Paracytheropteron
- Paradeltocyathus
- Paradentalium
- Paradonax
- Paradoxostoma
- Paradrilla
- Parafavella
- Paragaleus
- Paragonaster
- Parahalomitra
- Parahemingwayella
- Parakrithe
- Parakrithella
- Paralaeospira
- Paralepis
- Paralichthys
- Parametaria
- Paramya
- Paramysis
- Paranassa
- Paraneistrolepis
- Paranesidea
- Parangarenga
- Parapercis
- Parapholas
- Parapinnixa
- Paraplagusia
- Parapristopoma
- Parasalenia
- parasitic *forms
- Parasmilia
- Parasmittina
- Parastarte
- Paraster
- Paraterebra
- Parathyasira
- Paratrisopterus
- Paratrophon
- Paratymolus
- Parazebinella
- Parellisina
- Parinotus
- Pariphiculus
- Parisis
- Parmularia
- Parmulophora
- Paronaella
- Parophrys
- Parribacus
- Parthenina
- Parthenope
- Particoma
- Partubiola
- Partulida
- Parvacmea
- Parvamussium
- Parvicardium
- Parvilucina
- Parvilux
- Parviscala
- Parvisetia
- Parvithracia
- Pasythea
- Patagonacythere
- Patagospyris
- Patella
- Patellacythere
- Patellastra
- Patelloida
- Patellopsis
- Patinopecten
- Patro
- Patsyella
- Paua
- Paulonaria
- Pavona
- Paxula
- Payradeautia
- Paziella
- Peasiella
- Pecten
- Pectinaria
- Pectinia
- Pectinodonta
- Pectunculus
- Peculator
- Pedatopriscus
- Pedicularia
- Pedicythere
- Pegophysema
- Pegusa
- Pelates
- Pelecanoides
- Pelecocythere
- Pelecyora
- Pelicaria
- Pellasimnia
- Pellax
- Pellucistoma
- Pempheris
- Penaeus
- Penetrantia
- Penicillus
- Penion
- Penitella
- Pennahia
- Pennyella
- Pentaceros
- Pentactura
- Pentalastrum
- Pentanemus
- Pentaprion
- Peponocyathus
- Pepta
- Peracle
- Peratocytheridea
- Percalates
- Perichlamydium
- Pericosmus
- Peridipsaccus
- Perigastrella
- Periglypta
- Peringiella
- Periphaena
- Periphragella
- Periploma
- Perissocytheridea
- Perissodonta
- Peristedion
- Peristernia
- Perna
- Peromelissa
- Peronaea
- Peronella
- Peronidia
- Perotrochus
- Perrierina
- Perrinia
- Perrona
- Persephona
- Persicula
- Persikima
- Personopsis
- Perulibatrachus
- Pervicacia
- Petaloconchus
- Petalostegas
- Petraliella
- Petrasma
- Petricola
- Petricolaria
- Petricolirus
- Petrochirus
- Petrostroma
- Peyrotia
- Phacodiscus
- Phacorhabdotus
- Phacosoma
- Phacostylus
- Phaenocalpis
- Phaenoscenium
- Phalacrocidaris
- Phalaropus
- Phalium
- Phanerodon
- Phanerolepida
- Pharaonella
- Pharella
- Pharus
- Phasianella
- Phasianema
- Phasianotrochus
- Phaxas
- Phenacovolva
- Phenatoma
- Pheronema
- Phidolopora
- Philine
- Philippia
- Philobrya
- Philomedes
- Philyra
- Phlogocardia
- Phlyctenophora
- Phlyctiderma
- Phlyctocythere
- Phoca
- Phocaena
- Phoceana
- Pholadidea
- Pholadomya
- Pholadopsis
- Pholas
- Phonicosia
- Phorcus
- Phormocyrtis
- Phormospyris
- Phormostichoartus
- Phorticum
- Phos
- Phosinella
- Photichthys
- Phragmorisma
- Phrontis
- Phycis
- Phylactella
- Phylactellipora
- Phyllacanthus
- Phyllangia
- Phyllodina
- Phyllonotus
- Physeter
- Physiculus
- Physogyra
- Physoida
- Pictoscala
- Pictothyris
- Pileolaria
- Pillucina
- Pilumnus
- Pimelometopon
- Pinctada
- Pinguitellina
- Pinna
- Pinnixa
- Pinquigemmula
- Pipetta
- Pipettaria
- Pirena
- Pirenella
- Pirgos
- Pisa
- Pisania
- Pisanianura
- Pisinna
- Pisodonophis
- Pisostrigilla
- Pistocythereis
- Pisulina
- Pitar
- Pitarella
- Pitarina
- Placamen
- Placiphorella
- Placopecten
- Placostegus
- Placotrochus
- Placuna
- Placunanomia
- Plagiobrissus
- Plagioecia
- Plagionium
- Plakina
- Planaxis
- Planes
- Planitivela
- Platax
- Platichthys
- Platidia
- Platonea
- Platybrissus
- Platybursa
- Platycephalus
- Platycyathus
- Platygyra
- Platyla
- Platyleberis
- Platylepas
- Platyodon
- Platyrhina
- Platytrochus
- Plaxiphora
- Plebidonax
- Plectodon
- Plectopyramis
- Plectorhinchus
- Plectroninia
- Plectrypops
- Plegmosphaera
- Pleia
- Pleioptygma
- Pleroma
- Plesiastrea
- Plesioacirsa
- Plesioteuthis
- Plesiothyreus
- Plesiotrochus
- Pleuracme
- Pleurochorium
- Pleurolucina
- Pleuromeris
- Pleuronichthys
- Pleuroploca
- Pleuropyramis
- Pleurotomella
- Pleurotomoides
- Plicacesta
- Plicarcularia
- Plicatula
- Plicifusus
- Pliciscala
- Pliobothrus
- Pliotrema
- Plurigens
- Pocillopora
- Podabacia
- Podocoronis
- Pododesmus
- Podophthalmus
- Podothecus
- Poecilasma
- Pogonias
- Poirieria
- Polinices
- Pollia
- Pollicipes
- Polycope
- Polydactylus
- Polydora
- Polygyreulima
- Polyipnus
- Polymesoda
- Polymetme
- Polymetmeglareosus
- Polymixia
- Polynemamussium
- Polyschides
- Polysolenia
- Polystira
- Pomacanthus
- Pomadasys
- Pomatias
- Pomatoceros
- Pomaulax
- Pomolobus
- Pompholigina
- Ponderia
- Ponocyclus
- Pontinus
- Pontocypris
- Pontocythere
- Pontogammaridae
- Porcellana
- Porella
- Poricellaria
- Porichthys
- Porina
- Poriocidaris
- Porites
- Porocidaris
- Porodiscus
- Poroleda
- Poromitra
- Poromya
- Poropteron
- Porphyrocrinus
- Porterius
- Portlandia
- Portumnus
- Portunus
- Posacythere
- Poseidonamicus
- Potamonautes
- Potidoma
- Pourtalesia
- Pourtalocyathus
- Powellisetia
- Pranesus
- Pratulum
- Prenantia
- Priacanthus
- Priene
- Primnoa
- Primovula
- Printechinus
- Prionace
- Prionechinus
- Prionocidaris
- Prionotus
- Prionovolva
- Priotrochus
- Priscopedatus
- Priscularites
- Prisogaster
- Pristes
- Pristigenys
- Pristiophorus
- Pristis
- Proboscina
- Procalpurnus
- Proclava
- Progabbia
- Promartynia
- Pronucula
- Propeamussium
- Propeleda
- Prophetilora
- Propilidium
- Propontocypris
- Propustularia
- Prosimnia
- Prosipho
- Prosopium
- Protapes
- Protaulopsis
- Protenaster
- Proteoconcha
- Proterato
- Protoatlanta
- Protobarleeia
- Protocallithaca
- Protocypraea
- Protocytheretta
- Protoma
- Protomyctophum
- Protothaca
- Prototyphis
- Protula
- Protulophila
- Proxicharonia
- Proximitra
- Proxiuber
- Prunocarpus
- Prunopyle
- Prunum
- Psammacoma
- Psammechinus
- Psammobella
- Psammobia
- Psammocora
- Psammotellina
- Psammotreta
- Psenes
- Psephaea
- Psephidia
- Psettodes
- Pseudamussium
- Pseudantalis
- Pseudarchaster
- Pseudarcopagia
- Pseudechinus
- Pseudoaurila
- Pseudocarcinus
- Pseudocardium
- Pseudocentrotus
- Pseudoceratina
- Pseudochama
- Pseudocyrena
- Pseudocythere
- Pseudocytheretta
- Pseudocytherura
- Pseudohilsa
- Pseudohistiophorus
- Pseudoirus
- Pseudolacuna
- Pseudoliomesus
- Pseudoliva
- Pseudolucinisca
- Pseudomalaxis
- Pseudomelatoma
- Pseudometis
- Pseudoneptunea
- Pseudophichthyes
- Pseudopythina
- Pseudoraphitoma
- Pseudorca
- Pseudorhombila
- Pseudorotella
- Pseudoscaris
- Pseudoscopelus
- Pseudosetia
- Pseudosiderastraea
- Pseudosquilla
- Pseudostomatella
- Pseudotindaria
- Pseudotorinia
- Pseudotrivia
- Pseudovertagus
- Pseudoxenomystax
- Pseudoxyperas
- Pseudozonaria
- Psilaxis
- Psilosolen
- Pteria
- Pterocanium
- Pterocella
- Pterocera
- Pterochelus
- Pterocodon
- Pterocorys
- Pteroeides
- Pterolamiops
- Pteromeris
- Pteropurpura
- Pterorytis
- Pterospira
- Pterothrissus
- Pterotyphis
- Pterygia
- Pterygocythere
- Pterygocythereis
- Pterynotus
- Ptychatractus
- Ptycheulimella
- Ptychocerithium
- Ptychosyrinx
- Puellina
- Pugettia
- Pugilina
- Pulchrastele
- Pulchritima
- Pulsellum
- Pulvinites
- Punctiscala
- Puncturella
- Punipagia
- Pupa
- Pupatonia
- Puperita
- Pupillaea
- Pupillaria
- Puposyrnola
- Puriana
- Purpura
- Purpuradusta
- Purpurellus
- Purpurocardia
- Pusia
- Pusillina
- Pusiolina
- Pusionella
- Pustularia
- Pusula
- Putilla
- Putzeysia
- Puyseguria
- Pycnodonte
- Pyramidella
- Pyramidelloides
- Pyrazus
- Pyrene
- Pyrgiscilla
- Pyrgiscus
- Pyrgocythara
- Pyrgolampros
- Pyrgolidium
- Pyrgoma
- Pyrgopolon
- Pyrgulina
- Pyripora
- Pyromaia
- Pyruclia
- Pyrulella
- Pyrulofusus
- Pyrunculus
- Pythina
- Pyxipoma
Q
- Quadracythere
- Quadrans
- Quadrilatera
- Quadriscutella
- Quendreda
- Quidnipagus
- Quimalea
- Quoyia
R
- Rabicea
- Racodiscula
- Radimella
- Radiocondyla
- Radiofascigera
- Radiopora
- Radulinus
- Raeta
- Ramonalina
- Ramphonotus
- Randallia
- Ranella
- Rangia
- Raniceps
- Ranilia
- Ranina
- Raninoides
- Ranularia
- Rapana
- Raphitoma
- Ratifusus
- Ravitrona
- Rectiplanes
- Recurvina
- Redicirce
- Regardrella
- Reginella
- Regozara
- Renea
- Reniera
- Reptadeonella
- Reptomultisparsa
- Resania
- Retepora
- Reteporellina
- Retizafra
- Retropluma
- Retusa
- Revssirella
- Rexea
- Rexithaerus
- Rhabdus
- Rhacochilus
- Rhamphostomella
- Rhapdopleura
- Rhechias
- Rhincodon
- Rhinobatos
- Rhinoclavus
- Rhinoptera
- Rhizoplegma
- Rhizoprionodon
- Rhizorus
- Rhodosphaera
- Rhomboidella
- Rhopalastrum
- Rhopalocanium
- Rhynchobatus
- Rhyncholampas
- Rhynchopygus
- Rhynobrissus
- Rhyssoplax
- Rhytirhynchia
- Ricinella
- Rictaxis
- Rictocyma
- Rimacytheropteron
- Rimella
- Rimula
- Ringicula
- Ringiculella
- Ringiculina
- Risella
- Risellopsis
- Rissoa
- Rissoina
- Rissolina
- Rissomangelia
- Rissopsetia
- Ritena
- Riuguhdrillia
- Robertsonites
- Rochefortia
- Rochefortula
- Rochia
- Rogerella
- Romancheina
- Roncador
- Roperia
- Rosella
- Rosseliana
- Rossiteria
- Rostellaria
- Rotula
- Roxania
- Roxaniella
- Roya
- Rudicardium
- Ruditapes
- Ruggieria
- Ruggieriella
- Rugotyphis
- Rumphia
- Rupellaria
- Ryenella
S
- Sabatia
- Sabellaria
- Sabia
- Sabinella
- Saccaroturris
- Saccella
- Saccogaster
- Saccostrea
- Saduria
- Sahnia
- Sahnicythere
- Saida
- Salaputium
- Salenia
- Salmacina
- Salmacis
- Salmo
- Saltocuna
- Salvelinus
- Samacar
- Sandalolitha
- Sanguinolaria
- Sanhaliotis
- Sanyuania
- Sarda
- Sardina
- Sardinops
- Sarepta
- Sargus
- Sarmatella
- Sarmaticus
- Sarsicytheridea
- Sassia
- Saturnalis
- Saurida
- Savainiaster
- Savignyella
- Saxicavella
- Saxidomus
- Scabricola
- Scacchia
- Scaeochlamys
- Scaeoleda
- Scalanago
- Scalaronoba
- Scalenostoma
- Scalina
- Scaliola
- Scalpellum
- Scalpomactra
- Scalptia
- Scaphander
- Scapharca
- Scaphechinus
- Scaphella
- Scarus
- Scatophagus
- Schilderia
- Schismopora
- Schistomeringos
- Schizaster
- Schizobrachiella
- Schizochiton
- Schizocythere
- Schizomavella
- Schizoporella
- Schizoretepora
- Schwartziella
- Sciaena
- Sciaenops
- Scillaelepas
- Scintilla
- Scintillona
- Scissula
- Scissulina
- Scissurella
- Scissurona
- Sclerasterias
- Scleritoderma
- Sclerochilus
- Scleroplegma
- Sclerostyla
- Sclerothamnopsis
- Scobinopholas
- Scolymia
- Scombrosarda
- Sconsia
- Scopelarchus
- Scopelogadus
- Scopelopsis
- Scopelosaurus
- Scophthalmus
- Scrinium
- Scrobicularia
- Scrobs
- Scruparia
- Scrupocellaria
- Scrupus
- Scutarcopagia
- Scutellastra
- Scuticella
- Scutus
- Scyliorhinus
- Scylla
- Scyllarella
- Scyllarides
- Scyllarus
- Scymnodon
- Scymnorhinus
- Scyphopodium
- Scyra
- Searlesia
- Sectiarca
- Seguenzia
- Seila
- Selenaria
- Selenaspis
- Semantrum
- Semelangulus
- Semele
- Semelina
- Semeloidea
- Semibalanus
- Semibittium
- Semicassis
- Semicytherura
- Semierycina
- Semihaswellia
- Semipallium
- Semivertagus
- Semperella
- Semperia
- Senilia
- Sepia
- Septa
- Septifer
- Seriatopora
- Seriola
- Serpentipora
- Serpula
- Serpulorbis
- Serranus
- Serrata
- Serratina
- Serripes
- Serrula
- Sertella
- Servatrina
- Sesarma
- Sethocapsa
- Sethochytris
- Sethocyrtis
- Sethodiscinus
- Sethopera
- Sethopilium
- Sethostaurus
- Sethostylus
- Setosella
- Setosellina
- Sheldonella
- Sicyonia
- Siderastrea
- Sigapatella
- Sigaretotrema
- Sigatica
- Siliqua
- Siliquaria
- Sillaginoides
- Sillago
- Similipecten
- Simnia
- Sinaxila
- Sincola
- Sinezona
- Sinonovacula
- Sinuina
- Sinum
- Sinupetraliella
- Sipho
- Siphocampe
- Siphocampium
- Siphocypraea
- Siphonacmea
- Siphonalia
- Siphonaria
- Siphonochelus
- Siphonodentalium
- Siphonoporella
- Siphonorbis
- Siphonosphaera
- Siphopatella
- Siratus
- Sirembo
- Siriella
- Sirius
- Skarlatella
- Skena
- Smaragdia
- Smilium
- Smiloôrochus
- Smithiellia
- Smittina
- Smittipora
- Smittoidea
- Socotora
- Sohlia
- Solamen
- Solariaxis
- Solariella
- Solariorbis
- Solaster
- Solatia
- Solea
- Solecardia
- Solecurtus
- Solemya
- Solemyarina
- Solen
- Solena
- Solenastrea
- Solidicorbula
- Solidobalanus
- Sollariaxis
- Somniosus
- Spadentaline
- Spaniorinus
- Sparella
- Sparisoma
- Sparus
- Spatangus
- Spathipora
- Spathochlamys
- Spectamen
- Specula
- Speocarcinus
- Sphaerechinus
- Sphaeriodiscus
- Sphaeroma
- Sphaeronassa
- Sphaeropora
- Sphaeropyle
- Sphaerospyris
- Sphaerostylus
- Sphaerozoum
- Sphaerulobryozoon
- Sphenia
- Spheniopsis
- Sphenotrochus
- Sphyraena
- Sphyraenops
- Sphyrna
- Spicara
- Spinearca
- Spiniscala
- Spiralta
- Spiraserpula
- Spirinchus
- Spirocampe
- Spirocyrtis
- Spiroglyphus
- Spirolaxis
- Spironium
- Spirorbis
- Spirotropis
- Spirula
- Spissatella
- Spisula
- Splendrillia
- Spondylus
- Spongaster
- Spongasteriscus
- Spongobrachium
- Spongocore
- Spongodiscus
- Spongolena
- Spongolonche
- Spongophacus
- Spongoplegma
- Spongoprunum
- Spongopyle
- Spongostaurus
- Spongotripus
- Spongotrochus
- Spongoxiphus
- Spongurus
- Sporadopora
- Squaliolus
- Squatina
- Squilla
- Staphylaea
- Stauralastrum
- Staurocromyum
- Staurocyclia
- Staurodictya
- Staurodoras
- Staurosphaera
- Staurostylus
- Steginoporella
- Stellaria
- Stelletta
- Stenatherina
- Steno
- Stenobrachius
- Stenocionops
- Stenocùathus
- Stenodelphis
- Stenometra
- Stenoplax
- Stenopsella
- Stenopsis
- Stenorhytis
- Stenosarina
- Stenotis
- Stephanaria
- Stephanastrum
- Stephaniscus
- Stephanium
- Stephanocoenia
- Stephanoconus
- Stephanocyathus
- Stephanophyllia
- Stephanosella
- Steraechmella
- Stercorarius
- Stereocidaris
- Sternoptyx
- Steromphala
- Stethothyris
- Sthenorytis
- Stichocapsa
- Stichocorys
- Stichophormis
- Stichopites
- Stigmaulax
- Stigmosphaera
- Stilifer
- Stilla
- Stiracolpus
- Stirechinus
- Stiremetra
- Stirpulina
- Stolephorus
- Stomachetosella
- Stomatella
- Stomatia
- Stomatodiscus
- Stomatopora
- Stomatoporina
- Stomhypselosaria
- Stomopneutes
- Stosicia
- Stramonita
- Strebloceras
- Strephona
- Strephonella
- Streptopinna
- Striacallista
- Striarca
- Striatesta
- Strigatella
- Strigilla
- Strigillibuccinum
- Strigosella
- Striodostomia
- Striostrea
- Strioterebrum
- Strioturbonilla
- Stromateus
- Stromatospongia
- Strombiformis
- Strombina
- Strombus
- Strongylocentrotus
- Strongylopora
- Strophipora
- Strophocardia
- Struthiolaria
- Studeria
- Stueria
- Stylaster
- Stylatractus
- Stylidium
- Styliola
- Stylochlamydium
- Stylocidaris
- Stylocoeniella
- Stylocyclia
- Stylodictya
- Stylophora
- Stylopoma
- Stylosphaera
- Stylospongia
- Stylostaurus
- Styptosphaera
- Suavodrillia
- Subcancilla
- Subninella
- Subpterynotus
- Subula
- Subuliscala
- Suchium
- Sula
- Sulcastrella
- Sulcilioconcha
- Sulconatica
- Sulcoretusa
- Sulcosipho
- Sulcotrivia
- Sulculus
- Sunetta
- Sunettina
- Supplanaxis
- Surcula
- Surculina
- Sveltella
- Swainsonia
- Swiftopecten
- Sycotypus
- Sydaphera
- Sylvestra
- Symbolophorus
- Symethis
- Symmorphomactra
- Symphodus
- Symphurus
- Symphyllia
- Symplectoteuthis
- Synagrops
- Synaptites
- Synaptocochlea
- Syncera
- Syndosmya
- Syngnathus
- Synnotum
- Synodontaspis
- Synodus
- Syntomodrillia
- Syrnola
T
- Tachypleus
- Tachyrhynchus
- Taeniaturbo
- Taenioconger
- Tagelus
- Taimanawa
- Takia
- Talabrica
- Talityphis
- Talocodakia
- Talopena
- Talostolida
- Talparia
- Tamiosoma
- Tanea
- Tanella
- Tapes
- Taramellia
- Taranis
- Tarantinaea
- Tarletonbeania
- Taron
- Tauraxinus
- Tawera
- Tectarius
- Tectonatica
- Tectura
- Tectus
- Tegella
- Tegillarca
- Tegula
- Tegulorhynchia
- Teinostoma
- Telasco
- Telescopium
- Teliocrinus
- Tellidora
- Tellidorella
- Tellimya
- Tellina
- Tellinella
- Tellinidella
- Tellinides
- Tellinimactra
- Tellinota
- Telopora
- Temanella
- Temnocidaris
- Temnoconcha
- Temnopleurus
- Temnotrema
- Tenagodus
- Tenedocythere
- Tentidonox
- Tenuiactaeon
- Tenuicorbula
- Tenuiscala
- Teratichthys
- Terebella
- Terebellum
- Terebra
- Terebralia
- Terebratalia
- Terebratella
- Terebratulina
- Terebripora
- Teredo
- Terefundus
- Terelimella
- Teremelon
- Teretia
- Ternivoluta
- Tervia
- Tessaradoma
- Tessarastrum
- Tesselaster
- Tesseracme
- Tesseropora
- Testudinalia
- Tethocyathus
- Tethyaster
- Tetraclita
- Tetracytherurua
- Tetragonurus
- Tetraodon
- Tetraphormis
- Tetraplaria
- Tetrapterus
- Tetrapyle
- Tetrapylonium
- Tetrarrhabda
- Thais
- Thaisella
- Thala
- Thalamoporella
- Thalassicola
- Thalassina
- Thalotia
- Tharsiella
- Thaumastoplax
- Thaumatocypris
- Thecatia
- Thecidellina
- Thecopsella
- Thecosphaera
- Theelia
- Theliostyla
- Theocalyptra
- Theocampe
- Theocapsa
- Theoconus
- Theocorys
- Theocyrtis
- Theodiscus
- Theonella
- Theonoa
- Theopera
- Theophormis
- Theora
- Theragra
- Thericium
- Thesbia
- Thestyleda
- Thiarinella
- Thoe
- Tholonium
- Tholospyris
- Thoosa
- Thorista
- Thoristella
- Thovana
- Thracia
- Thrombus
- Thyasira
- Tiara
- Tiaracerithium
- Tiberia
- Tibia
- Tichosina
- Timoclea
- Timothynus
- Tindaria
- Tioria
- Tivela
- Toledonia
- Tomellana
- Tonicella
- Tonicia
- Tonna
- Torcula
- Torculoidella
- Torinia
- Tornus
- Torquesia
- Toxopneustes
- Trachelochetus
- Trachinus
- Trachurus
- Trachycarcinus
- Trachycardium
- Trachyleberidea
- Trachyleberis
- Trachyphyllia
- Trachypollia
- Trachyrhinchus
- Tractoliria
- Tragula
- Transennella
- Trapezium
- Trematooecia
- Trematotrochus
- Tremogasterina
- Tremopora
- Tremoschizodina
- Tresus
- Tretocalia
- Tretocidaris
- Tretodictyum
- Triacanthus
- Triacartus
- Triactis
- Triakis
- Triaracerithium
- Tribia
- Trichechus
- Trichiurus
- Trichomusculus
- Trichomya
- Trichopaltarion
- Trichosirius
- Trichotropis
- Tricolia
- Tricolocampe
- Tricolocapsa
- Tricornis
- Tridacna
- Tridonta
- Triebelina
- Trifaricardium
- Trigla
- Trigoniocardia
- Trigonocyclia
- Trigonopora
- Trigonostoma
- Trigonulina
- Trilasmis
- Trimusculus
- Triodon
- Triops
- Triphora
- Triphoturus
- Tripilidium
- Tripneustes
- Tripocalpis
- Tripocyrtis
- Tripodiscium
- Tripodonium
- Tripodospyris
- Triporula
- Tripterophycis
- Tripterotyphis
- Tripterygion
- Triptychus
- Trisidos
- Trisopterus
- Trissopilium
- Tristichotrochus
- Tristylospyris
- Tritiaria
- Tritonalia
- Triumphis
- Trivia
- Triviella
- Trivirostra
- Trochita
- Trochocerithium
- Trochocyathus
- Trochodiscus
- Trochosodon
- Trochotugurium
- Trochus
- Trona
- Tropaeas
- Trophon
- Trophonopsis
- Tropidocyathus
- Tropidophora
- Truncacila
- Truncaria
- Truncatoflabellum
- Trunculariopsis
- Trypetesa
- Trypostega
- Tubicauda
- Tubigerina
- Tubiola
- Tubipora
- Tubiporella
- Tubucellaria
- Tubulipora
- Tucetilla
- Tucetona
- Tucetonella
- Tudicla
- Tudicula
- Tudorella
- Tugali
- Tugonia
- Tugurium
- Tumulus
- Turbicellopora
- Turbinella
- Turbo
- Turboella
- Turbonilla
- Turcica
- Turricula
- Turrina
- Turris
- Turriscala
- Turritella
- Turritellopsis
- Turritriton
- Turtonia
- Tylocassis
- Tylocidaris
- Tylodinella
- Tylospira
- Tympanotonos
- Typhina
- Typhinellus
- Typhis
- Typhlomangelia
U
- Uberella
- Uca
- Ulophysema
- Umbilia
- Umbonium
- Umbonula
- Umbra
- Umbraculum
- Umbrina
- Uncinulina
- Undaria
- Undulostrea
- Unedogemmula
- Ungulina
- Uniavicularia
- Unicytis
- Upogebia
- Uroconger
- Urocyrtis
- Urocythereis
- Uroleberis
- Urolophus
- Uromitra
- Urophycis
- Urosalpinx
- Ursus
- Utica
- Uttleya
- Uvanilla
- Uzita
V
- Vaceletia
- Valenciennellus
- Vanikoro
- Vanitrochus
- Varicorbula
- Varicospira
- Varinucula
- Varuna
- Vasticardium
- Vasum
- Veletuceta
- Velutina
- Venericardia
- Venerupis
- Ventricolaria
- Ventricoloidea
- Ventrifossa
- Ventrilia
- Venus
- Vepricardium
- Veremolpa
- Verilarca
- Verilus
- Vermetus
- Vermicularia
- Vermilia
- Vermiliopsis
- Verminaria
- Vermitexta
- Verrillofungia
- Verruca
- Verrucella
- Verticipronus
- Verticordia
- Vesicomya
- Vesicularia
- Vetulina
- Vexillum
- Vibracella
- Vibracellina
- Villorita
- Vimentum
- Vinciguerria
- Vincularia
- Virgularia
- Viridibuccinum
- Viriola
- Vitjasiella
- Vitrinella
- Vitrinellops
- Vitta
- Vittaticella
- Vitularia
- Volachlamys
- Volema
- Volupicuna
- Voluspa
- Voluta
- Volutoconus
- Volutocorbis
- Volutomitra
- Volutopsius
- Volutospina
- Volva
- Volvarina
- Volvarinella
- Volvulella
- Voorthuyseniella
- Vulsella
W
- Waimatea
- Waipaoa
- Waisiuconcha
- Wallucina
- Waltonia
- Warnea
- Watersipora
- Watsonia
- Williamia
- Willungia
X
- Xancus
- Xantho
- Xanthochorus
- Xanthodius
- Xenistius
- Xenogalea
- Xenophalium
- Xenophora
- Xenophthalmus
- Xenostrobus
- Xenotrophon
- Xenuroturris
- Xestoleberis
- Xiphatractus
- Xiphias
- Xiphodictya
- Xiphosphaera
- Xylophaga
- Xymene
- Xymenella
Y
- Yagudinella
- Ybseloscoecia
- Yoldia
- Yoldiella
Z
- Zaclys
- Zafra
- Zalipais
- Zalophus
- Zanassarina
- Zaniolepis
- Zaphon
- Zaria
- Zeacolpus
- Zeacrypta
- Zeacumanthus
- Zeadmete
- Zealeda
- Zebina
- Zebittium
- Zegalerus
- Zeidora
- Zelithophaga
- Zemira
- Zemitrella
- Zemyllita
- Zemysia
- Zemysina
- Zenatia
- Zenatiopsis
- Zenepos
- Zenion
- Zenocentrotus
- Zephos
- Zeradina
- Zethalia
- Zeuxis
- Zirfaea
- Ziziphinus
- Zoarces
- Zoila
- Zonaria
- Zonodiscus
- Zoroaster
- Zygochlamys
- Zygocircus
- Zygostephanus