List of marine gastropod genera in the fossil record

This list of marine gastropod genera in the fossil record is an attempt to list all the genera of sea snails or marine gastropod mollusks which have been found in the fossil record. Nearly all of these are genera of shelled forms, since it is relatively rare for gastropods without a shell (sea slugs) to leave any recognizable traces. It is also worth pointing out that this list of genera represents only a very tiny fraction of the number of genera that must actually have existed over the evolutionary time span: the fossil record is an extremely patchy and exceedingly incomplete pteryrecord of life on earth in earlier geological eras.

Many genera on this list are still extant, are still living now. On the current version of this list, some extant genera are mistakenly marked as extinct, with a "†" next to the name, but this should slowly become more accurate over time as corrections are made.

The list consists of formal genera names in the class Gastropoda; it excludes purely vernacular names. It shows all commonly accepted genera, but it also includes genera which are now considered invalid or doubtful (nomina dubia), and names that were not formally published (nomina nuda), as well as junior synonyms of more established names.

The list also includes some genera which were first described as gastropods, but which are no longer considered to be gastropods, and which in many cases are not even considered to be mollusks.

Genera are listed here alphabetically; no attempt has been made to group them in families or other higher taxa.

A

 * Abderospira
 * †Abretiella
 * †Abylea
 * †Acamptochetus
 * †Acamptogenotia
 * Acanthina
 * †Acanthinucella
 * †Acanthonema
 * †Acanthotrophia
 * †Aciculiscala
 * †Acilia
 * Acirsa
 * †Acirsella
 * †Acliceratia
 * Aclis
 * †Aclisina
 * Acmaea
 * †Acmaturris
 * †Acme
 * †Acominia
 * †Acrilla
 * †Acrilloscala
 * †Acrocoelum
 * †Acrocolpus
 * †Acrocosmia
 * †Acroreia
 * †Acrosolarium
 * †Acrospira
 * †Acrostemma
 * †Acrostylus
 * Actaeon
 * †Actaeonella
 * †Actaeonellina
 * †Actaeonema
 * †Actaeonidea
 * †Actaeonina
 * †Actaeopyramis
 * Acteocina
 * Actinoleuca
 * †Actinopsis
 * †Actomphalus
 * †Acuminia
 * †Acupurpura
 * †Adamnestia
 * †Adelocythara
 * Adelomelon
 * †Ademtula
 * †Adeorbis
 * †Adinus
 * †Adiozoptyxis
 * †Admete
 * †Admetopsis
 * †Adusta
 * †Aehmospira
 * †Aeneator
 * †Aepystoma
 * †Aequispirella
 * Aesopus
 * †Afer
 * †Affiniptyxis
 * †Affrollonia
 * †Aforia
 * †Africoterebellum
 * †Afriscrobs
 * †Afrocornulina
 * †Afrocypraea
 * †Afrovolutilithes
 * Agaronia
 * †Agasoma
 * Agatha
 * †Agathirses
 * †Agathistoma
 * †Agathodonta
 * †Agathotoma
 * †Agatrix
 * †Ageria
 * †Agladrillia
 * †Aglaoglypta
 * †Agnesia
 * †Agnewia
 * †Agniesella
 * †Aiptospira
 * †Aizyella
 * †Akburunella
 * Akera
 * Alaba
 * †Alabina
 * †Alaionema
 * †Alariopsis
 * †Alaskacirrus
 * †Alaskiella
 * †Alaskozygopleura
 * †Alcidiella
 * †Alcira
 * Alcithoe
 * †Aldrichia
 * Alectrion
 * Aletes
 * †Algaroda
 * Alia
 * Aliculastrum
 * †Aliger
 * †Aliofusus
 * †Allocosmia
 * †Allostrophia
 * †Alocaxis
 * †Alocospira
 * †Altaspiratella
 * †Altivasum
 * †Altomarginula
 * †Altrix
 * Alvania
 * Alvinia
 * Amaea
 * Amalda
 * †Amarophos
 * †Amaura
 * †Amaurellina
 * †Amauropsina
 * †Amauropsis
 * †Amauropsona
 * †Amaurotoma
 * †Amberleya
 * †Amblyacrum
 * †Ambozone
 * †Amekichilus
 * †Amekicythara
 * †Ameranella
 * †Amonilea
 * †Amorena
 * Amoria
 * †Ampezzamilda
 * †Ampezzoella
 * †Ampezzogyra
 * †Ampezzopleura
 * †Ampezzoscala
 * †Ampezzotrochus
 * †Amphinerita
 * †Amphiperas
 * †Amphiscapha
 * Amphissa
 * †Amphithalamus
 * †Amphitomaria
 * †Amphitrochus
 * †Amplicolpus
 * †Amplogladius
 * †Amplosipho
 * †Amplostoma
 * Ampulla
 * †Ampullella
 * †Ampullina
 * †Ampullinopsis
 * †Ampullospira
 * †Ampulonatica
 * †Amuletum
 * †Amyclina
 * †Amyssodropa
 * Anachis
 * †Anacithara
 * †Ananias
 * †Anapepta
 * †Anapetopsis
 * †Anarconcha
 * †Anastes
 * Anatoma
 * †Anazola
 * †Anbullina
 * †Anceps
 * †Anchura
 * Ancilla
 * †Ancillarina
 * †Ancillina
 * Ancillista
 * †Ancillopsis
 * †Ancistrolepis
 * †Ancistromesus
 * †Ancistrosyrinx
 * †Anculosa
 * †Andangularia
 * †Andicula
 * †Andonia
 * †Anematina
 * †Aneurychilus
 * †Aneurystoma
 * Angaria
 * †Anguillospira
 * †Angularia
 * †Angyomphalus
 * †Anisomyon
 * †Anisostoma
 * †Annepona
 * †Anodomaria
 * †Anomalisipho
 * †Anomalofusus
 * †Anomalomya
 * †Anomphalus
 * †Anoptychia
 * †Anoriostoma
 * †Anozyga
 * †Ansates
 * †Antarctodarwinella
 * †Anteglossia
 * †Antepepta
 * †Anticlimax
 * †Anticonulus
 * †Antiguraleus
 * †Antillachelus
 * Antillophos
 * †Antimelatoma
 * †Antimitra
 * †Antinodulus
 * Antiplanes
 * Antisolarium
 * †Antitrochus
 * †Antizafra
 * †Aoteadrillia
 * †Apachella
 * †Apataxia
 * †Aphanoptyxis
 * †Aphanotaenia
 * †Aphera
 * †Apicaria
 * †Apiocypraea
 * †Apiotoma
 * †Aplocus
 * Aplustrum
 * Apollon (synonym of Ranella)
 * Aporrhais
 * †Appisania
 * †Aptycholathyrus
 * †Aptyxiella
 * †Aptyxis
 * †Aquilofusus
 * †Araeodactylus
 * †Araeonema
 * †Araratella
 * †Arastra
 * †Arayina
 * †Archicypraea
 * †Archierato
 * Archimediella
 * †Archinacella
 * Architectonica
 * Arctomelon
 * †Arcularia
 * †Aremella
 * Arene
 * †Arestorides
 * †Argalista
 * †Arginula
 * Argobuccinum
 * †Argyrobessa
 * †Argyropeza
 * †Ariadnaria
 * †Arisostoma
 * †Aristerella
 * †Aristerostrophia
 * †Arizonella
 * †Arjamannia
 * †Armenostoma
 * †Arrhoges
 * †Arribazona
 * †Arthessidae
 * †Ascensovoluta
 * †Ascolatirus
 * †Aspa
 * Aspella
 * †Asperdaphne
 * †Asperilla
 * †Asperiscala
 * †Aspidotheca
 * †Astandes
 * Astele
 * Asteracmea
 * †Asterohelix
 * †Asthenotoma
 * Astraea
 * †Astralites
 * Astralium
 * Astyris
 * Atalacmea
 * †Ataphropsis
 * †Ataphrus
 * †Ataxocerithium
 * †Ataxotrochus
 * †Athleta
 * Atilia
 * †Atira
 * †Atkinsonella
 * Atlanta
 * †Atlantobellerophon
 * †Atoma
 * †Atractotrema
 * †Atraktus
 * †Atresius
 * †Atrimitra
 * †Attenuata
 * Attiliosa
 * Atys
 * †Aulacodiscus
 * †Aulacofusus
 * †Aulacostrepsis
 * †Aulica
 * †Aulicina
 * †Aurelianella
 * †Auriala
 * †Aurina
 * †Auriptygma
 * †Auristomia
 * †Auseria
 * †Austerum
 * †Australolaxispira
 * †Australonema
 * †Austriacopsis
 * †Austroaporrhais
 * †Austroclavus
 * †Austrocochlis
 * †Austrocominella
 * †Austrocypraea
 * †Austrodrillia
 * †Austrofusus
 * †Austroharpa
 * †Austrolithes
 * †Austromitra
 * †Austrosassia
 * †Austroscalata
 * †Austrosphaera
 * †Austrotoma
 * †Austrotriton
 * †Austrotrophon
 * †Austroworthenia
 * †Avellana
 * †Awateria
 * †Axelella
 * †Axymene

B

 * †Babella
 * †Babylonella
 * Babylonia
 * †Babylonites
 * †Bactrocythara
 * †Bactroptyxis
 * †Bactrospira
 * Bailya
 * †Bajanerita
 * †Bakonyia
 * Balcis
 * †Balinula
 * †Bandelium
 * †Bandellina
 * †Banis
 * †Bankivia
 * †Barbarofusus
 * †Barbotella
 * Barleeia
 * †Barnesella
 * †Barocospira
 * †Barrandecirrus
 * †Barrealispira
 * †Barroisucaulus
 * Bartonia
 * Bartschella (synonym of Turbonilla)
 * †Barycypraea
 * Baryspira (synonym of Amalda)
 * †Basilirata
 * †Basilissa
 * †Basilitrona
 * †Bassotrochus
 * †Bastropia
 * †Bathraspira
 * †Bathrotomaria
 * Bathybembix
 * †Bathyclides
 * †Bathygalea
 * †Bathytoma
 * Batillaria
 * †Batillona
 * †Bauxia
 * †Bayania
 * †Baylea
 * †Bedeva
 * †Beisselia
 * †Bela
 * †Belatomina
 * Bellaspira
 * †Bellastraea
 * †Bellatara
 * †Bellazona
 * †Bellerophina
 * †Bellerophon
 * †Bellifusus
 * †Belliscala
 * †Belloliva
 * †Belonidium
 * †Belophos
 * †Bembexia
 * †Bembicium
 * †Bembridgia
 * †Bendeia
 * †Benoistea
 * †Benthomangelia
 * †Beraua
 * †Beraunia
 * †Beretra
 * †Beringius
 * †Berlieria
 * †Bernaya
 * †Berthelinia
 * Besla
 * †Beyrichidiscus
 * †Bezanconia
 * †Biangularia
 * †Bicarina
 * †Bicarinella
 * †Bicatillus
 * †Bifidoscala
 * †Biformispira
 * †Bifurcium
 * †Bigotella
 * †Billiemia
 * †Biplex
 * †Biplica
 * Bittiolum
 * †Bittiscala
 * Bittium
 * †Bivetiella
 * †Bivetopsia
 * †Bivonia
 * †Blackdownia
 * †Blancia
 * †Blasicrura
 * †Boeckhia
 * †Boehmiola
 * †Boettgeriola
 * †Boggsia
 * †Bohaispira
 * †Bohaispiropsis
 * †Boiotremus
 * Bolinus
 * †Bolis
 * †Bolma
 * †Boltenella
 * †Bonellitia
 * †Bonnetella
 * †Boreocomitas
 * †Boreoscala
 * Boreotrophon
 * †Borestus
 * †Borsonella
 * †Borsonia
 * †Boucotspira
 * †Boucotspira
 * †Bourgetia
 * †Boutillieria
 * †Bovicornu
 * †Bowdenagaza
 * †Bowdenatheca
 * †Brachycerithium
 * †Brachycythara
 * †Brachysphingus
 * †Brachystoma
 * †Brachystomia
 * †Brachytoma
 * †Brachytomaria
 * †Brachytrema
 * †Bradyospira
 * †Bramertonia
 * †Bridegeina
 * †Bridegeites
 * †Brilonella
 * †Brocchia
 * †Brocchinia
 * †Brocchitas
 * †Brochidium
 * †Brochina
 * †Brookesena
 * Brookula
 * †Brouzetia
 * †Bruclarkia
 * †Brunonia
 * †Bubovicus
 * †Bucanella
 * †Bucania
 * †Bucanoides
 * †Bucanopsis
 * †Bucanospira
 * †Buccinanops
 * †Buccinaria
 * †Buccinofusus
 * †Buccinopsis
 * †Buccinorbis
 * †Buccinulum
 * Buccinum
 * †Buccitriton
 * †Bucconia
 * †Buchozia
 * †Buckmanina
 * †Buechelia
 * †Bufonariella
 * †Bulbihastula
 * †Bulbus
 * †Bulimactaeon
 * †Bulimorpha
 * Bulla
 * Bullata
 * †Bullia
 * †Bullina
 * †Bulliopsis
 * †Bullopsis
 * †Bulovia
 * †Burdikinia
 * Bursa
 * †Burtinella
 * Buscotypus
 * Busycon
 * †Buvignieria
 * †Byramia
 * †Byzantia

C

 * †Cabania
 * †Cabestanna
 * Caecum
 * †Caesia
 * †Calaurops
 * †Calcarata
 * †Calcitrapessa
 * †Calicantharus
 * †Caliendrum
 * †Callianax
 * †Calliobasis
 * †Calliomphalus
 * Calliostoma
 * †Calliotectum
 * †Calliotropis
 * †Calliovarica
 * †Callispira
 * †Callistadia
 * †Callistele
 * †Callistocypraea
 * †Callitomaria
 * †Callolongchaeus
 * †Callopoma
 * †Callotrochus
 * †Callusaria
 * †Calodisculus
 * †Calophos
 * †Calorebama
 * Calotrophon
 * †Calpurna
 * †Calthalotia
 * †Calvadosiella
 * †Calverturris
 * Calyptraea
 * †Calyptraphorus
 * †Calyptroides
 * †Calyptropsis
 * †Camarnia
 * †Cambodgia
 * †Campanelle
 * †Campanile
 * †Campanilopa
 * †Campbellospira
 * †Campichia
 * †Camponaxis
 * †Camponeila
 * †Camposcala
 * †Camptoceratops
 * †Campylacrum
 * †Canaliscala
 * Canarium (synonym of Strombus (Canarium) )
 * †Cancellaria
 * †Cancellariella
 * †Cancelrana
 * †Cancilla
 * †Candinia
 * †Canepina
 * Cantharidella
 * Cantharidus
 * †Cantharulus
 * Cantharus
 * †Cantrainea
 * †Capulacmaea
 * †Capulus
 * †Carboninia
 * †Cardinalia
 * †Careliopsis
 * †Caribiella
 * †Caricella
 * †Carinacca
 * Carinaria
 * †Carinaropsis
 * †Carinator
 * †Carinodrillia
 * †Carinomphalus
 * †Carinotropsis
 * †Carota
 * †Caseyella
 * †Casimiria
 * Casmaria
 * †Cassianastraea
 * †Cassianaxis
 * †Cassianebala
 * †Cassianilda
 * †Cassianocirrus
 * †Cassianozyga
 * †Cassidaria
 * †Cassiope
 * †Cassiopella
 * †Cassipelia
 * Cassis
 * †Catantostoma
 * †Cataschisma
 * †Catazona
 * †Catazone
 * †Catenoscala
 * †Catenotoma
 * †Catilon
 * †Caucasella
 * †Cautotriphora
 * †Caveola
 * †Cavernisa
 * †Cavilabium
 * †Caviumbonia
 * Cavolina
 * †Celatoconus
 * Cellana
 * †Cenomanella
 * †Centrifuga
 * †Centrifugus
 * †Cepatia
 * †Ceratia
 * †Ceratopea
 * †Ceratostoma
 * †Ceraunocochlis
 * †Ceritella
 * Cerithidea
 * †Cerithideops
 * †Cerithideopsilla
 * †Cerithideopsis
 * Cerithidium
 * †Cerithiella
 * †Cerithina
 * †Cerithinella
 * †Cerithioclava
 * †Cerithiocyga
 * †Cerithioderma
 * †Cerithioides
 * †Cerithiomorpha
 * †Cerithiopsida
 * †Cerithiopsidella
 * Cerithiopsis
 * †Cerithiscala
 * Cerithium
 * †Cerithopsina
 * †Chalarostrepsis
 * †Charadreum
 * Charonia
 * †Chartroniella
 * †Chasmotheca
 * †Chauvetia
 * †Chavanicerithium
 * †Chedevillia
 * Cheilea
 * †Cheilospicata
 * †Cheilotomona
 * †Chelotia
 * †Chelyconus
 * †Chemnitzia
 * †Chepultapecia
 * †Chesaclava
 * †Chesasyrinx
 * †Chesathais
 * †Chesatrophon
 * †Chevallieria
 * Chicoreus
 * †Chileutomia
 * †Chilocyclus
 * †Chilodonta
 * †Chilodontoidea
 * †Chingua
 * †Chippewaella
 * †Chiralithes
 * †Chiraluta
 * †Chlathrus
 * Chlorostoma
 * †Chlupacispira
 * †Chondrocerithium
 * †Chorus
 * †Christitys
 * †Chrysallida
 * †Chrysame
 * †Chrysostoma
 * †Cibecuia
 * †Cidarina
 * †Cigelirina
 * †Cilara
 * †Cimoliocentrum
 * †Cimolithium
 * †Cinclidonema
 * †Cinctiscala
 * Cingula
 * Cingulina
 * †Cinguliturris
 * †Cinulia
 * †Circulopsis
 * †Circuloscala
 * †Circulus
 * †Cirillia
 * †Cirrus
 * †Cirsocerithium
 * †Cirsochilus
 * †Cirsomphalus
 * Cirsonella
 * †Cirsope
 * †Cirsostylus
 * Cirsotrema
 * Cittarium
 * †Claibornia
 * †Clanculopsis
 * Clanculus
 * †Clathrobaculus
 * Clathrodrillia
 * Clathromangelia
 * †Clathronema
 * †Clathroscala
 * †Clathrospira
 * †Clathrus
 * †Clathurella
 * †Clava
 * †Clavatula
 * †Clavellofusus
 * †Clavidrupa
 * †Clavilithes
 * †Claviscala
 * †Clavocerithium
 * †Clavstoma
 * †Clavus
 * †Cleobula
 * †Cleotrivia
 * †Clifdenia
 * †Climacina
 * †Climacopoma
 * †Clinopegma
 * †Clinura
 * †Clinurella
 * †Clinuropsis
 * Clio
 * †Clivuloturris
 * †Closia
 * †Closteriscus
 * †Closteroides
 * †Cloughtonia
 * †Clypeola
 * †Clypeolum
 * †Clypeomorus
 * †Clypidina
 * †Coalingodea
 * †Coanollonia
 * †Coccopigya
 * †Cocculina
 * †Cocculinella
 * †Cochiolepis
 * †Cochleochilus
 * Cochlespira
 * †Cochlespirella
 * †Cochlespiropsis
 * †Cochliconus
 * †Codinella
 * †Codonocheilus
 * †Coelobolma
 * †Coelocaulus
 * †Coelocentrus
 * †Coelochrysalis
 * †Coelocyclus
 * †Coelodiscus
 * †Coeloscapha
 * †Coelostylina
 * †Coelotrochus
 * †Coelozone
 * †Coemansia
 * †Colina
 * †Collabrina
 * †Colliculus
 * †Collina
 * Collisella
 * †Collonia
 * †Collonista
 * †Colostracon
 * †Colpites
 * †Colpomphalus
 * †Colposigma
 * †Colpospira
 * †Colpostomia
 * Colubraria
 * †Colubrella
 * †Colubrellina
 * Columbarium
 * Columbella
 * †Columbellaria
 * †Columbellina
 * †Columbellisipho
 * †Columbellopsis
 * Colus
 * †Coluzea
 * †Colwellia
 * †Comarmondia
 * †Cominella
 * †Cominista
 * †Cominula
 * †Comitas
 * †Commonozonispira
 * Compsodrillia
 * †Compsonema
 * †Conactaeon
 * Concholepas
 * †Conchothyra
 * †Concinnispira
 * †Confusiscala
 * †Conilithes
 * †Coninoda
 * †Coniscala
 * Conjectura
 * †Conocerithium
 * †Conoidacmaea
 * †Conolithes
 * †Conominolia
 * †Conomitra
 * †Conomurex
 * †Conorbis
 * †Conorhytis
 * †Conotoma
 * †Conotomaria
 * †Consobrinella
 * †Contemniscala
 * †Contortella
 * †Conuber
 * Conus
 * †Cookia
 * †Cophocara
 * †Copidocatomus
 * †Coptochetus
 * †Coptosipho
 * †Coptostoma
 * †Coptostomella
 * †Coraeophos
 * †Coralliophila
 * †Cordieria
 * †Cordispira
 * †Coriandria
 * †Cornulina
 * †Coronatica
 * †Coronia
 * †Coroniopsis
 * †Coroniscala
 * †Coronopsis
 * †Corsania
 * †Cortinella
 * †Cosmasyrinx
 * †Cosmetalepas
 * †Cosmocerithium
 * †Cosmolithes
 * †Cosmophiline
 * †Cossmannea
 * †Cossmannia
 * †Cossmannica
 * †Costaella
 * Costellaria
 * †Costoanachis
 * †Costosyrnola
 * †Cotonopsis
 * †Cottonia
 * †Couthouyia
 * †Cowlitzia
 * †Craginia
 * †Cranopsis
 * †Craspedostoma
 * †Crassilabrum
 * †Crassimarginata
 * †Crassimurex
 * †Crassiscala
 * Crassispira
 * †Crassispirella
 * †Crassopleura
 * †Crawfordina
 * †Crebriscala
 * †Cremides
 * †Crenaturricula
 * †Crenetocerithium
 * †Crenilabium
 * †Crenilunula
 * †Crenistriella
 * †Crenisutura
 * †Creniturbo
 * †Crenulazone
 * †Creonella
 * †Crepidula
 * †Crepipatella
 * †Creseis
 * †Cretaceomurex
 * †Cribraria
 * †Crimella
 * †Crisposcala
 * †Cristalloella
 * †Crommium
 * †Cronia
 * †Crossata
 * †Crossea
 * †Crosseola
 * †Crossoceras
 * †Crossostoma
 * †Crossotrema
 * Crucibulum (gastropodCrucibulum
 * †Cruziturricula
 * †Cryoturris
 * †Cryptaulax
 * †Cryptoborsonia
 * †Cryptobranchia
 * †Cryptochorda
 * †Cryptoconus
 * †Cryptocordieria
 * †Cryptomella
 * †Cryptonatica
 * †Cryptonerita
 * †Cryptoplocus
 * †Cryptoptyxis
 * †Cryptorhytis
 * †Cryptospira
 * †Ctenilyria
 * †Ctenocolpus
 * †Cubestana
 * †Culmia
 * †Cupaniella
 * †Cuphosolenus
 * †Cuphotifer
 * †Cupidoliva
 * †Curetia
 * †Cuvierina
 * †Cyclites
 * †Cyclobathmus
 * †Cyclodostomia
 * †Cyclomolops
 * †Cyclonema
 * †Cyclope
 * †Cycloscala
 * †Cycloscena
 * †Cyclospongia
 * †Cyclostomaria
 * †Cyclostrema
 * †Cyclostremela
 * Cyclostremiscus
 * †Cyclostromella
 * †Cyclotheca
 * †Cyclothyca
 * †Cycloturbo
 * †Cyclozyga
 * Cylichna
 * †Cylichnania
 * †Cylichnatys
 * Cylichnella
 * †Cylichnina
 * †Cylichnopsis
 * †Cylicioscapha
 * †Cylinder
 * †Cylindriscala
 * †Cylindritella
 * †Cylindrites
 * †Cylindritopsis
 * †Cylindrobullina
 * †Cylindromitra
 * †Cylindrotruncatum
 * †Cyllene
 * †Cyllenina
 * †Cymakra
 * †Cymatiella
 * Cymatium
 * †Cymatophos
 * †Cymatospira
 * †Cymatosyrinx
 * Cymbiola
 * †Cymbium
 * †Cymbularia
 * †Cymenorhytis
 * †Cymia
 * †Cynisca
 * †Cyniscella
 * Cyphoma
 * †Cyphonochelus
 * Cypraea
 * Cypraecassis
 * †Cypraedia
 * †Cypraeerato
 * †Cypraeogemmula
 * †Cypraeopsis
 * †Cypraeorbis
 * †Cypraeotrivia
 * †Cyproglobina
 * †Cypropterina
 * †Cyrbasia
 * †Cyrtochetus
 * †Cyrtospira
 * †Cyrtostropha
 * †Cyrtulotibia
 * †Cythara
 * †Cytharella

D

 * †Dactylidella
 * †Dactylidia
 * †Daidia
 * †Dalliella
 * †Dallitesta
 * †Damesia
 * Daphnella
 * †Daphnobela
 * †Darbya
 * †Dardanula
 * †Daronia
 * †Dasyostoma
 * †Decorospira
 * †Deianira
 * †Delphinulopsis
 * †Dembabaspira
 * †Demoulia
 * †Denayella
 * †Dendroconus
 * †Dennantia
 * †Dentallopoma
 * Dentimargo
 * †Dentiscala
 * †Dentistyla
 * †Dentiterebra
 * †Dentrimitra
 * Depressiscala
 * Dermomurex
 * †Derstolida
 * †Dertonia
 * †Desertospira
 * †Deshayesia
 * †Deslongchampsia
 * †Desorinassa
 * †Deussenia
 * †Devonozyga
 * †Diacria
 * †Diaerecallus
 * Diala
 * †Dialopsis
 * †Dialytostoma
 * †Diameza
 * Diaphana
 * †Diarthema
 * Diastoma
 * †Diastomella
 * †Diatinostoma
 * †Diatrypesis
 * †Dibaphimitra
 * †Dibaphus
 * †Dicellonema
 * †Dichostasia
 * †Dickinsiella
 * †Diconomorpha
 * †Dicosmos
 * †Dicroloma
 * †Dictyobembix
 * †Dictyotomaria
 * †Didianema
 * †Diempterus
 * †Dientomochilus
 * †Dietrichiella
 * †Digitolabrum
 * †Dihelice
 * †Dilatilabrum
 * Diloma
 * †Diminovula
 * †Dimorphotectus
 * †Dinaxis
 * Diodora
 * †Diplochilus
 * †Diploconula
 * †Diplocyma
 * †Diplomeriza
 * †Diplomitra
 * †Diplozone
 * †Diptychochilus
 * †Diptyxiella
 * †Dirachis
 * †Dircella
 * †Dirhachopea
 * †Dirocerithium
 * †Discobasis
 * †Discocirris
 * †Discogenus
 * †Discogonius
 * †Discohelix
 * †Discopsis
 * †Discordichilus
 * †Discoscala
 * †Discotectonica
 * †Discotectus
 * †Discotheca
 * †Discotoma
 * †Discotomaria
 * †Discotropis
 * †Disculus
 * †Disoketa
 * †Dispotaea
 * †Dissochilus
 * Distorsio
 * †Ditretus
 * †Dizoniopsis
 * †Docomphala
 * †Doellocosmia
 * Dolabella
 * †Dolicholatirus
 * †Dolichupis
 * †Dolicrassea
 * †Doliella
 * †Doliocassis
 * †Dolomena
 * †Dolomitella
 * †Dolostoma
 * †Domerginella
 * †Donaldiella
 * †Donaldina
 * †Dongiovannia
 * †Dorsanum
 * †Dorsina
 * †Dostia
 * †Douvilleia
 * †Douvilletoma
 * †Doxander
 * †Drepanocheilus
 * †Drepanoconcho
 * Drillia
 * †Drilliola
 * †Drilluta
 * †Druidwilsonia
 * Drupa
 * †Dumasella
 * †Dunkeria
 * Duplicaria
 * †Dutrochus
 * †Dyeria

E

 * Eatoniella
 * †Ebala
 * †Eburna
 * †Eburnopsis
 * †Eccliseogyra
 * †Ecculiomphalus
 * †Eccyliopterus
 * †Echinellopsis
 * †Echinimathilda
 * †Echininus
 * †Echinobathra
 * †Echinocirrus
 * †Echinofulgur
 * †Echinophoria
 * †Echinoturris
 * †Ecphora
 * †Ecphorosycon
 * †Ectinochilus
 * †Ectomaria
 * †Edithais
 * †Egerea
 * †Egestas
 * †Egilina
 * †Eglisia
 * †Egotistica
 * †Ehlersina
 * †Eichwaldiella
 * †Eirlysia
 * †Eiselia
 * Elachorbis
 * †Elaeocyma
 * †Elasmonema
 * †Elatioriella
 * †Eleganella
 * †Elegantiscala
 * Elephantanellum
 * †Eleutherospira
 * †Eligmoloxus
 * †Ellatrivia
 * †Ellicea
 * †Ellipsoscapha
 * †Elliptovermetus
 * †Ellisella
 * †Elysiacea
 * Emarginula
 * †Emarginulina
 * †Emersonia
 * †Enaeta
 * †Enantiostoma
 * †Enatimene
 * †Enclyclomphalus
 * †Endianaulax
 * †Endiaplocus
 * †Endiataenia
 * †Endiatoma
 * †Endiatrachelus
 * †Endopachychilus
 * †Endoptygma
 * Engina
 * Engoniophos
 * †Enida
 * †Entacanthus
 * Entemnotrochus
 * †Entomella
 * †Entomope
 * †Eoacteon
 * †Eoatlanta
 * †Eobucania
 * †Eocalliostoma
 * †Eocerithium
 * †Eocernina
 * †Eocithara
 * †Eoclathurella
 * †Eocymatium
 * †Eocypraea
 * †Eocythara
 * †Eodrilla
 * †Eoharpa
 * †Eoliotina
 * †Eomathilda
 * †Eopleurotoma
 * †Eoptychia
 * †Eoranella
 * †Eosinica
 * †Eosipho
 * †Eosiphonalia
 * †Eosolariella
 * †Eosolarium
 * †Eosurcula
 * †Eothesbia
 * †Eotomaria
 * †Eotrivia
 * †Eotrochactaeon
 * †Eotrochus
 * †Eoturris
 * †Eotympanotonus
 * †Eovasum
 * †Eovolutilithes
 * †Eovolva
 * †Eoxancus
 * †Epalxis
 * †Epetrium
 * †Epheria
 * †Epideira
 * †Epidirella
 * †Epidirona
 * †Epifaxis
 * †Epiptychia
 * †Episcynia
 * Epitonium
 * †Epulotrochus
 * Erato
 * Eratoidea
 * †Eratopsis
 * †Eratotrivia
 * †Erginus
 * †Ericusa
 * †Eripachya
 * †Eriptycha
 * Erosaria
 * †Erronea
 * †Erymarella
 * †Escoffieria
 * †Estea
 * †Ethalia
 * †Etrema
 * †Etremopsis
 * †Euactaeonina
 * †Eubela
 * †Eucheilodon
 * Euchelus
 * †Euchilotheca
 * †Euchrysalis
 * †Euclathurella
 * †Euclia
 * †Eucochlis
 * †Eucominia
 * †Euconactaeon
 * †Euconia
 * †Euconospira
 * †Eucycloidea
 * †Eucyclomphalus
 * †Eucycloscala
 * †Eucyclus
 * †Eucymba
 * †Eucypraedia
 * Eudolium
 * †Eugabrielona
 * Eulima
 * Eulimastoma
 * †Eulimella
 * †Eulimene
 * †Eumetadrillia
 * †Eumetula
 * †Eumitra
 * †Eunaticina
 * †Eunema
 * †Eunemopsis
 * †Euninella
 * †Euomphalopsis
 * †Euomphalopterus
 * †Euomphalus
 * Euparthenia
 * †Euphemitella
 * †Euphemites
 * †Euphemitopsis
 * †Euphyllon
 * Eupleura
 * †Euplica
 * †Euprotomus
 * †Euriclanculus
 * †Eurissolina
 * †Euryalox
 * †Eurydike
 * †Euryentmema
 * †Euryentome
 * †Euryochetus
 * †Eurypyrene
 * †Eurytorus
 * †Euryzone
 * †Euscobinella
 * †Euseila
 * Euspira
 * †Euspirocrommium
 * †Eustoma
 * †Eustomia
 * †Eustrombus
 * †Euthria
 * †Euthriofusus
 * †Euthymella
 * †Euthyrachis
 * †Euthystylus
 * †Eutinochilus
 * †Euzone
 * †Evalea
 * †Evarnula
 * †Evelynella
 * †Ewekoroia
 * †Ewekorolaxis
 * †Exechestoma
 * †Exechocirsus
 * †Exilia
 * †Exilifusus
 * †Exiloidea
 * †Exlessia
 * †Exomiliopsis
 * †Extendilabrum
 * †Eymarella

F

 * †Fadaiella
 * †Faloriella
 * †Falsicolus
 * †Falsifusus
 * †Falsostyliola
 * †Falsostyliola
 * †Faluniella
 * Fartulum
 * Fasciolaria
 * †Fascioplex
 * †Fascivelvata
 * †Fastigiella
 * Fautor
 * Favartia
 * †Favria
 * †Favriella
 * †Fax
 * †Faxxia
 * †Feneoniana
 * †Fenestrosyrinx
 * †Fenolignum
 * †Fibula
 * †Fibulella
 * †Fibuloptygmatis
 * †Fibuloptyxis
 * †Ficopsis
 * †Fictoacteon
 * †Fictonoba
 * †Ficulomorpha
 * †Ficulopsis
 * Ficus
 * †Filodrilla
 * †Fimbriatella
 * †Finlayola
 * †Fischeriella
 * Fissurella
 * †Fissurellidea
 * †Fissurisepta
 * †Flacilla
 * †Flemmingia
 * †Fletcherviewia
 * †Flexopteron
 * †Floribella
 * †Floripatella
 * †Floyda
 * †Folina
 * †Foratiscala
 * Forreria
 * †Forsia
 * †Forskaelena
 * †Fossacypraea
 * †Fossariopsis
 * Fossarius
 * †Fossatrivia
 * †Fredenia
 * †Friginatica
 * †Frombachia
 * †Fujispira
 * †Fulgerca
 * Fulgoraria
 * †Fulguroficus
 * †Fulgurofusus
 * †Funis
 * Funiscala
 * †Fuscibuccinum
 * †Fuscoscala
 * †Fusiaphera
 * †Fusiguraleus
 * †Fusimilis
 * †Fusimitra
 * Fusinus
 * †Fusiptyxis
 * †Fusispira
 * †Fusitoma
 * Fusitriton
 * †Fusitron
 * †Fusiturricula
 * †Fusiturris
 * †Fusoficula
 * †Fusoidella
 * †Fusoterebra
 * †Fusus
 * †Futhystylus
 * †Fyfea

G

 * †Gabrielona
 * †Galeodaria
 * †Galeodea
 * †Galeodina
 * †Galeodinopsis
 * †Galeoocorys
 * †Galericulus
 * †Galeropsis
 * †Gamizyga
 * †Gammadiscus
 * †Gamopleura
 * †Ganesa
 * †Gargania
 * †Garnotia
 * †Garramites
 * †Gasconadia
 * †Gazameda
 * †Gegania
 * †Gelagna
 * †Gelasinostoma
 * †Gemaspira
 * †Gemmaterebra
 * †Gemmellaroia
 * †Gemmoliva
 * †Gemmula
 * †Gemmuloborsonia
 * †Genkaimurex
 * †Genota
 * †Geolcomia
 * †Georgia
 * †Gergovia
 * Gibberula
 * †Gibberulina
 * †Gibberulus
 * Gibbula
 * †Gigantocapulus
 * †Gigantocypraea
 * †Gigantogonia
 * †Gilbertina
 * †Gilbertturricula
 * †Ginebis
 * †Girtyspira
 * †Girvania
 * †Gisortia
 * †Gispyrella
 * †Glabella
 * †Glabrocingulum
 * †Glaphyrina
 * †Glauconia
 * †Glauconiella
 * †Globiconcha
 * †Globiomorpha
 * †Globisinum
 * †Globodrillia
 * †Globonema
 * †Globozygia
 * †Globularia
 * †Globulocerithium
 * †Glosia
 * †Glossaulax
 * †Glyphodeta
 * †Glyphostoma
 * †Glyphoturris
 * †Glyptochrysalis
 * †Glyptomaria
 * †Glyptospira
 * †Glyptostyla
 * †Glyptotoma
 * †Glyptozaria
 * †Gomphopages
 * †Goniasma
 * †Goniatogyra
 * †Goniocheila
 * †Gonioconcha
 * †Goniocylichna
 * †Goniocylindrites
 * †Goniodostomia
 * †Goniogyra
 * †Gonioptyxis
 * †Goniospira
 * †Gonysycon
 * †Gonzagia
 * †Gosavia
 * †Gosseletina
 * †Gothicispira
 * †Gouetina
 * †Gougerotia
 * †Gourmya
 * †Graciliala
 * †Gracilipurpura
 * †Gracilispira
 * †Gradiella
 * †Grandostoma
 * †Granosolarium
 * †Grantlandispira
 * †Granula
 * Granulina
 * †Granulittorina
 * †Granulolabium
 * †Graphidula
 * †Graphiocomassa
 * †Graphis
 * †Gregorioiscala
 * †Groomodiscus
 * †Guelphinacella
 * †Guidonia
 * †Guildfordia
 * †Guizhouia
 * †Guizospira
 * †Gumina
 * †Guraleus
 * †Gutturnium
 * †Gymnarus
 * †Gymnentome
 * †Gymnocerithium
 * †Gyrineum
 * †Gyrodes
 * †Gyrodoma
 * †Gyroma
 * †Gyronema
 * Gyroscala
 * †Gyrospira
 * †Gyrotropis

H

 * †Hacobjania
 * †Hadriania
 * †Hahazimania
 * †Halia
 * †Haliotiomorpha
 * Haliotis
 * †Haliphoebus
 * Halistylus
 * †Halloysia
 * †Hallstadtia
 * †Haloginella
 * Haminoea
 * †Hamlinia
 * †Hammatospira
 * †Hamptoniella
 * †Hamusina
 * †Hanaibursa
 * †Hanaispira
 * †Hanetia
 * †Hapalorbis
 * †Haplocochlias
 * †Haploptyxis
 * †Haplospira
 * †Haplovoluta
 * †Harfordia
 * †Harmatia
 * †Harmeria
 * Harpa
 * †Harpago
 * †Harpagodes
 * †Harpella
 * †Harpula
 * †Harrisianella
 * †Hartungia
 * Hastula
 * †Haurakia
 * †Haustator
 * Haustellum
 * †Hautura
 * †Hayamiella
 * †Haydenia
 * †Hebeseila
 * †Hebra
 * †Heida
 * †Heilprinia
 * Helcion
 * Heliacus
 * †Helicacanthus
 * †Helicaulax
 * †Helicocryptus
 * †Helicospira
 * †Helicotoma
 * †Heligmope
 * †Heligmostylus
 * †Heligmotenia
 * †Heligmotoma
 * †Helminthozyga
 * †Hemiacirsa
 * †Hemicerithium
 * †Hemichenopus
 * †Hemiconus
 * †Hemifusus
 * †Hemipleurotoma
 * †Hemiplicatula
 * †Hemisurcula
 * Hemitoma
 * †Hemizyga
 * †Heniastoma
 * †Hennocquia
 * †Hercorhynchus
 * †Hermania
 * †Herminespina
 * Herpetopoma
 * Hespererato
 * †Hesperiella
 * †Hesperiturris
 * †Hesperocirrus
 * †Heterocerithiopsis
 * †Heterocithara
 * †Heterogyrella
 * †Heteronodosus
 * †Heteroptygmatis
 * †Heterospira
 * †Heterotrema
 * †Hexachorda
 * †Hexaglauconia
 * Hexaplex
 * †Hilda
 * †Hillites
 * †Hima
 * †Himantonia
 * †Hinia
 * †Hippocampoides
 * †Hippochrene
 * Hipponix
 * †Hiromurex
 * †Hirotyphis
 * †Hirsonella
 * †Hirtoscala
 * †Hispanosinuites
 * †Hispidofusus
 * †Hiwia
 * †Hologyra
 * †Holopea
 * †Holzapfelia
 * Homalopoma
 * †Hopkinsiana
 * †Hordeulima
 * †Horiostomella
 * †Horizostoma
 * †Hormotoma
 * †Hormotomina
 * †Horologium
 * †Houdasia
 * †Houzeauia
 * †Hudlestonella
 * †Humiliworthenia
 * †Hungariella
 * †Hwaania
 * †Hyala
 * Hyalina
 * †Hyalocylis
 * †Hyalorisia
 * †Hyaloscala
 * †Hybochelus
 * †Hydrotribulus
 * †Hyperacanthus
 * †Hypergonia
 * †Hyphantozyga
 * †Hypocassis
 * †Hypodema
 * †Hypselentoma
 * †Hypsipleura
 * †Hypterita
 * †Hystricoceras
 * †Hystrivasum

I

 * †Ianthinopsis
 * †Iddingsia
 * †Idioraphe
 * †Ihungia
 * †Ilanga
 * †Iljinella
 * Illyanassa
 * †Imbricaria
 * †Incilaster
 * †Incisilabium
 * †Indocerithium
 * †Indovoluta
 * †Infracoronia
 * †Infundibulops
 * †Inglisella
 * †Inquisitor
 * †Insolentia
 * †Involuta
 * †Iolaea
 * †Iothia
 * †Iphiana
 * †Iravadia
 * Iredalina
 * Iredalula
 * †Isanda
 * †Ischnoptygma
 * Iselica
 * †Isfarispira
 * †Ishnula
 * †Islipia
 * †Isonema
 * †Isospira
 * †Ispharina
 * †Isselia
 * †Italoptygmatis
 * †Ithycythara
 * †Itia
 * †Itieria
 * †Itomelania
 * †Itruvia
 * †Ivara
 * †Ividella

J

 * †Jaccardiella
 * †Janacus
 * †Janiopsis
 * Janthina
 * †Japelion
 * †Jaton
 * †Jedria
 * †Jeffreysina
 * Jenneria
 * †Jetwoodsia
 * †Jogjacartanus
 * †Johannaia
 * †Johnstrupia
 * †Josepha
 * †Jousseemea
 * Jujubinus
 * Julia
 * †Jumala
 * †Junghuhnia
 * †Jurassiphorus

K

 * †Kaawatina
 * †Kahua
 * †Kaiparapelta
 * †Kaitangata
 * †Kaitoa
 * †Kangapaya
 * †Kangilioptera
 * †Kangxianospira
 * †Kapua
 * †Katoptychia
 * †Katosira
 * †Kaunhowenia
 * †Kaurnella
 * †Kawanamia
 * †Kaweka
 * †Keeneia
 * †Keepingia
 * †Keilostoma
 * Kelletia
 * †Keration
 * †Kestocenbra
 * †Khetella
 * †Khumerspira
 * †Kiaeromphalus
 * †Kimina
 * †Kinishbia
 * †Kinkaidia
 * †Kishinewia
 * †Kittlia
 * †Kittliconcha
 * †Kittlidiscus
 * †Kittlistylus
 * †Kittlitrochus
 * †Kiviasukkaan
 * †Kjerulfonema
 * †Kleinacteon
 * Knefastia
 * †Knightella
 * †Knightites
 * †Kodymites
 * †Kokenella
 * †Kokenospira
 * †Koniakaua
 * †Korovinia
 * †Kotakaia
 * †Krachia
 * †Krebsia
 * †Kuroshioturris
 * Kurtziella
 * †Kyndalyna

L

 * †Labiostrombus
 * †Labridens
 * †Labrocuspis
 * †Laccinum
 * †Lachryma
 * †Lacinia
 * †Lacriforma
 * Lacuna
 * †Lacunaria
 * †Lacunella
 * †Lacunina
 * †Lacunospira
 * †Lacurnaria
 * †Ladinotrochus
 * †Ladinula
 * †Laetifautor
 * †Laevella
 * †Laevibaculus
 * †Laevibuccinum
 * †Laeviconulus
 * †Laevihastula
 * †Laevinerinea
 * †Laeviselica
 * †Laevistrombus
 * †Laeviterebrum
 * †Laevitomaria
 * †Laevityphis
 * †Lagunitus
 * †Laiocochlis
 * Lambis
 * Lamellaria
 * †Lamelliphorus
 * †Lamellospira
 * †Lampanella
 * †Lampasopsis
 * †Lamprodoma
 * †Lamprodomina
 * †Lampusia
 * †Lancedellia
 * †Lapparia
 * †Lathyrulus
 * †Latiala
 * Latiaxis
 * †Latifusus
 * †Latirolagena
 * Latirus
 * †Latisipho
 * †Latitaenia
 * †Laubella
 * †Lautoconus
 * †Laxispira
 * †Leaella
 * †Lecanospira
 * †Leiopyrga
 * †Leiorhinus
 * †Leiostraca
 * †Leiotrochus
 * †Lemintina
 * †Lemniscolittorina
 * †Lenitrophon
 * †Lenticularis
 * †Lentigo
 * Lepeta
 * †Lepetella
 * †Lepetopsis
 * †Lepicythara
 * †Lepidotrochus
 * †Leporemax
 * †Leporicypraea
 * Lepsiella
 * †Lepsithais
 * †Leptadrillia
 * †Leptegauana
 * †Leptocolpus
 * †Leptoconus
 * †Leptomaria
 * †Leptomphalus
 * †Leptomurex
 * †Leptoptygma
 * †Leptorima
 * †Leptoscapha
 * †Leptosurcula
 * †Leptothyra
 * †Leptothyropsis
 * †Leptozone
 * †Leptozyga
 * †Lesperonia
 * †Lesueurilla
 * †Leucorhynchia
 * Leucosyrinx
 * Leucozonia
 * †Leufroyia
 * †Levella
 * †Levenia
 * †Leviathania
 * †Levifusus
 * †Lewinskia
 * †Lewisiella
 * †Liaohenia
 * †Libycerithium
 * †Lienardia
 * †Ligatella
 * †Lilax
 * †Liljevallospira
 * Liloa
 * Limacina
 * †Limneria
 * Limulatys
 * †Linatella
 * †Linemera
 * †Linglingella
 * †Liniaxis
 * †Linopyrga
 * †Linsleyella
 * †Liocarenus
 * †Liocerithium
 * †Liochlamys
 * †Liocium
 * †Lioglyphostoma
 * †Liomesus
 * †Liopeplum
 * †Liospira
 * †Liotella
 * Liotia
 * †Liotina
 * †Lippistes
 * †Liracassis
 * †Liracraea
 * †Lirastrombina
 * †Lirasyrinx
 * †Liratilia
 * †Liratomina
 * †Lirobittium
 * †Lirocingula
 * †Lirofusus
 * †Lironoba
 * †Lirosoma
 * †Lirularia
 * †Lisbonia
 * †Lischkeia
 * †Lispodesthes
 * †Lissapiopsis
 * †Lissochilus
 * †Lissomuricopsis
 * †Lissospira
 * Lissotesta
 * Lissotestella
 * †Lithoconus
 * †Lithophysema
 * Lithopoma
 * †Lithotrochus
 * Litiopa
 * Littoraria
 * Littorina
 * †Littorinides
 * †Littorinolacuna
 * †Littorinopsis
 * †Littorniscala
 * Livonia
 * †Lodanaria
 * Lodderena
 * †Lodderia
 * †Lomia
 * †Lomirosa
 * †Longchaeus
 * †Longicerithium
 * †Longoconcha
 * †Longstaffia
 * †Lophioturris
 * †Lophocochlias
 * †Lophonema
 * †Lophospira
 * Lottia
 * †Lowenstamia
 * †Loxisonia
 * †Loxobidens
 * †Loxonema
 * †Loxoplocus
 * †Loxoptyxis
 * †Loxotaphrus
 * Lucapina
 * Lucapinella
 * †Lucerapex
 * †Lucidestea
 * †Luciella
 * †Luciellina
 * Lunatia
 * Lunatica
 * †Lunella
 * †Lunulazona
 * †Lupira
 * †Luponovula
 * †Luria
 * †Lutema
 * †Lutima
 * †Lydiphnis
 * †Lyncina
 * †Lyosoma
 * †Lyria
 * †Lyrianella
 * †Lyrischapa
 * †Lyromangelia
 * †Lyropurpura
 * †Lyrosurcula
 * †Lyrotyphis
 * †Lysiogyrus
 * †Lysis
 * †Lytospira

M

 * †Macilentos
 * †Macluritella
 * †Maclurites
 * Macrocypraea
 * †Macrodostomia
 * †Macromphalus
 * Macron
 * †Macroniscus
 * †Macrosinus
 * †Macrozafra
 * †Macrurella
 * †Madiella
 * Magilus
 * †Magnatica
 * †Magnicapulus
 * †Makiyamaia
 * †Malayaspira
 * Malea
 * †Malluvium
 * †Mambrinia
 * †Mamiconus
 * †Mammilla
 * †Manawatawhia
 * †Mancorus
 * †Mandolina
 * Mangelia
 * †Mangiliella
 * †Manzanospira
 * †Manzonia
 * Maoricolpus
 * †Maoricrypta
 * †Maoriscaphander
 * †Maoritomella
 * †Maorivetia
 * †Marbodeia
 * Marevalvata
 * Margarella
 * †Margaritella
 * Margarites
 * Marginella
 * †Margineulima
 * †Mariacassia
 * †Mariacolpus
 * †Mariadrillia
 * †Mariafusus
 * †Marianarona
 * †Mariasalpinx
 * †Mariasveltia
 * †Mariaturricula
 * †Marinauris
 * †Mariothia
 * †Mariottia
 * †Marmarostoma
 * †Marmolatella
 * †Marshallaria
 * †Marshallena
 * †Marsupina
 * †Marticia
 * †Marwickara
 * †Massyla
 * †Mastigospira
 * †Mataxa
 * Mathilda
 * †Mathurifusus
 * †Maudrillia
 * †Mauithoe
 * †Maurea
 * †Mauria
 * †Mauritia
 * †Mauryna
 * †Maussenetia
 * Maxwellia
 * †Mayeria
 * †Mazzalina
 * †Meandrella
 * †Mecoliotia
 * †Mediargo
 * †Medionapus
 * †Medoriopsis
 * †Meekospira
 * †Megalatractus
 * †Megalocypraea
 * †Megalomphala
 * †Megalomphalus
 * †Megalonoda
 * †Megastomia
 * †Megasurcula
 * †Megatebennus
 * Megathura
 * †Megistostoma
 * Meioceras
 * †Melagraphia
 * Melanatria
 * Melanella
 * †Melanioptyxis
 * †Melapium
 * †Melaraphe
 * †Melatoma
 * †Mellarium
 * †Mellevillia
 * Melongena
 * †Menestho
 * †Mennessieria
 * †Menthafonia
 * †Merelina
 * †Merica
 * †Mericella
 * †Merriamites
 * †Mesalia
 * †Mesochilotoma
 * †Mesocoelia
 * †Mesogena
 * †Mesoglauconia
 * †Mesohalina
 * †Mesoneritina
 * †Mesorhytis
 * †Mesospira
 * †Mesotrochactaeon
 * †Mesovalvata
 * †Metacerithium
 * †Metaconulus
 * †Metamelon
 * Metaxia
 * †Metoptoma
 * †Metorthonema
 * †Metriomphalus
 * †Metula
 * †Metulella
 * †Mexicotrochaetaeon
 * †Micantapex
 * †Michaletia
 * †Michela
 * †Michelia
 * †Micheliopsis
 * †Micraclathurella
 * †Micranellium
 * Micrelenchus
 * †Micrentoma
 * †Micreschara
 * †Microcheilus
 * †Microdoma
 * †Microdrillia
 * †Microfulgur
 * †Microfusus
 * †Microgaza
 * †Microlacuna
 * †Microliotia
 * †Micromphalina
 * †Micromphalus
 * †Microptychis
 * †Microrhytis
 * †Microschiza
 * †Microstelma
 * †Microsurcula
 * †Microtaphrus
 * †Microthyca
 * †Microvoluta
 * †Mikadotrochus
 * †Milda
 * †Millepes
 * †Millosevichia
 * †Minolia
 * †Minutiscala
 * †Mioawateria
 * †Miocenebra
 * †Miofractarmilla
 * †Miolyncina
 * †Miomelon
 * †Miopila
 * †Miopleiona
 * †Mirachelus
 * †Miraclathurella
 * †Miralda
 * †Mirascapha
 * †Mirlolaminatus
 * †Mirochiliticus
 * †Mirua
 * †Mirula
 * †Misteia
 * †Mistostigma
 * Mitra
 * †Mitraria
 * †Mitratoma
 * Mitrella
 * †Mitrelloturris
 * †Mitreola
 * †Mitridomus
 * †Mitrithara
 * †Mitrodrillia
 * †Mitrolumna
 * Mitromorpha
 * †Mnestia
 * †Mnestocylichnella
 * †Modelia
 * †Modestospira
 * Modulus
 * †Moelleria
 * †Moerckeia
 * †Molopophorus
 * †Monalaria
 * †Monetaria
 * †Monilea
 * †Moniliopsis
 * †Moniliriretusa
 * †Monocirsus
 * †Monocuphus
 * †Monodentella
 * †Monodilepas
 * Monodonta
 * †Monoplex
 * †Monopophorus
 * †Monoptygma
 * †Montfortia
 * †Montfortula
 * †Montia
 * †Montospira
 * †Morania
 * †Morchiella
 * †Morea
 * †Morgania
 * †Morionella
 * †Mormula
 * †Morphotropis
 * Morula
 * Morum
 * †Morunella
 * †Motyris
 * †Mourlonia
 * †Mourlonopsis
 * †Mrhilaia
 * †Muconalia
 * †Multifarites
 * †Multiptyxis
 * Munditia
 * †Munditiella
 * †Murchisonella
 * †Murchisonia (Gastropod)
 * †Muregina
 * Murex
 * Murexiella
 * †Murexsul
 * Muricanthus
 * †Muricassis
 * Muricopsis
 * †Muricotrochus
 * †Murotriton
 * †Murphitys
 * †Musashia
 * †Myagrostoma
 * †Myobarbum
 * †Myristica
 * †Myurella
 * †Myurellina

N

 * †Nacca
 * Nacella
 * †Nairiella
 * †Nanggulania
 * †Nannamoria
 * †Nannodiella
 * †Nannopyrgula
 * †Nannubasa
 * †Napulus
 * †Naquetia
 * †Naricava
 * †Naricopsina
 * †Narona
 * †Nassa
 * †Nassaria
 * †Nassarina
 * Nassarius
 * †Nassicola
 * †Natella
 * †Natica
 * †Naticarius
 * †Naticonema
 * †Naticopsis
 * †Natiria
 * †Natitaria
 * †Nawenia
 * †Neamphitomaria
 * †Nebularia
 * †Neilsonia
 * †Nekewis
 * †Nematrochus
 * †Nemrac
 * †Neoathleta
 * †Neobernaya
 * †Neocola
 * †Neocylindrites
 * †Neocylindrus
 * †Neoguraleus
 * †Neoimbricaria
 * †Neojanacus
 * †Neolatirus
 * †Neonerinea
 * †Neoplatytaichum
 * †Neopleurofusia
 * †Neoptyxis
 * †Neosimnia
 * †Neotrochaetaeon
 * †Neozeba
 * †Nepotilla
 * †Neptunea
 * †Nereina
 * †Neridomus
 * †Nerinatica
 * †Nerinea
 * †Nerinella
 * †Nerineopsis
 * †Nerineoptyxis
 * †Nerinoides
 * †Nerita
 * †Neritaria
 * Neritina
 * †Neritoma
 * †Neritoplica
 * †Neritopsis
 * †Neritoptyx
 * †Neritrema
 * †Nevadaspira
 * †Neverita
 * †Nicema
 * †Nicolia
 * †Nicosiaella
 * †Nigerapana
 * †Nigerithium
 * †Nihonia
 * †Nina
 * †Ninella
 * †Niotha
 * †Nipponitys
 * †Nipteraxis
 * †Nisaclis
 * †Nisiturris
 * †Niso
 * †Nisostomia
 * †Nitidella
 * †Nitidiscala
 * †Niveria
 * †Nodilittorina
 * Nodiscala
 * †Nodisurculina
 * †Noditerebra
 * †Nododelphinula
 * †Nodonema
 * †Nodospira
 * †Nodulus
 * †Noetca
 * †Nonacteonina
 * †Nordospira
 * †Norrisella
 * †Norrisia
 * †Northia
 * †Notacirsa
 * †Notadusta
 * Notoacmea
 * Notocrater
 * †Notocypraea
 * †Notocytharella
 * †Notogenota
 * †Notohaliotis
 * †Notoluponia
 * †Notomella
 * †Notopeplum
 * †Notoplejona
 * †Notoscrobs
 * †Notoseila
 * †Notosetia
 * †Notosinister
 * †Nototrivia
 * †Notovoluta
 * †Nozeba
 * Nucella
 * †Nuclearia
 * †Nucleopsis
 * †Nudangarita
 * †Nudivagus
 * †Nummocalcar
 * †Nummotectus

O

 * †Oamaruia
 * †Obex
 * †Obexomia
 * †Obornella
 * Obtortio
 * †Obtusella
 * Ocenebra
 * †Ochetochilus
 * †Ochetoclava
 * †Ocinebrellus
 * †Ocinebrina
 * †Odetta
 * †Odoardia
 * †Odontobasis
 * †Odontofusus
 * †Odontomaria
 * †Odontopolys
 * †Odontopurpura
 * †Odontoturbo
 * †Odostomella
 * Odostomia
 * †Odostomidea
 * †Oehlertia
 * Oenopota
 * †Offleya
 * †Offlyeotrochus
 * †Ogivia
 * †Okinawavoluta
 * †Olequahia
 * †Oligoptycha
 * †Oligoptyxis
 * Oliva
 * †Olivancillaria
 * Olivella
 * †Olivia
 * †Olivula
 * †Olssonella
 * †Omalaxis
 * Omalogyra
 * †Omanimaria
 * †Omogymna
 * †Omospira
 * †Omphalius
 * †Omphalonema
 * †Omphaloptycha
 * †Omphalotrochus
 * Omphalotropis
 * †Oncochilus
 * †Ongleya
 * †Oniscidia
 * †Onkospira
 * †Onoba
 * Oocorys
 * †Ooliticia
 * †Oonia
 * †Oostrombus
 * †Ootomaria
 * †Ootomella
 * Opalia
 * †Opaliopsis
 * †Opella
 * †Ophileta
 * †Ophiletina
 * Ophiodermella
 * †Opimilda
 * †Opisthonema
 * †Optoturris
 * Orbitestella
 * †Orecopia
 * †Orectospira
 * †Orinella
 * †Ormastralium
 * †Ornamentaria
 * †Ornatoptygmatis
 * †Ornatospira
 * †Ornopsis
 * †Orospira
 * †Orthaulax
 * †Orthochetus
 * †Orthochilus
 * †Orthonema
 * †Orthonychia
 * †Orthoptyxis
 * †Orthostomia
 * †Orthosurcula
 * †Osilinus
 * †Ossiania
 * †Ostioma
 * †Otatara
 * †Otollonia
 * †Otomphalus
 * †Otopleura
 * †Otostoma
 * †Ottoino
 * Otukaia
 * †Ovactaeonina
 * †Ovatipsa
 * †Ovilia
 * †Ovinotis
 * †Ovirissoa
 * †Ovulactaeon
 * †Ovulopsis
 * †Owenella
 * †Oxyacrum
 * †Oxycypraea
 * †Oxygyrus
 * †Oxymeris
 * †Oxyspira
 * †Oxystele
 * †Ozarkina
 * †Ozarkispira
 * †Ozodochilus

P

 * †Pachycrommium
 * †Pachycymbiola
 * †Pachycythara
 * †Pachydontella
 * Pachymelon
 * †Pachyomphalus
 * †Pachyrissoina
 * †Pachystrophia
 * †Pachysyrnola
 * †Pagodea
 * †Pagodina
 * †Pagodospira
 * †Pagodula
 * †Pakistania
 * †Paladmete
 * †Palaeatractus
 * †Palaeocancellaria
 * †Palaeocollonia
 * †Palaeocypraea
 * †Palaeohydatina
 * †Palaeoloxotoma
 * †Palaeonarica
 * †Palaeonisco
 * †Palaeopsephaea
 * †Palaeorhaphis
 * †Palaeoschisma
 * †Palaeoscurria
 * †Palaeostylus
 * †Palaeotrochactaeon
 * †Palaeotrochus
 * †Palaeozygopleura
 * †Palangaria
 * †Paleoalvania
 * †Paleofusimitra
 * †Paleunema
 * †Paleuphemites
 * †Pallacera
 * †Palliocypraea
 * †Palliseria
 * †Palmadusta
 * †Palomelon
 * †Panamurex
 * †Pangoa
 * †Panormella
 * †Papillina
 * †Paraborsonia
 * †Paracerithium
 * †Paracirculus
 * †Paraclathurella
 * †Paracomitas
 * †Paracomminia
 * †Paradrilla
 * †Parafusus
 * †Paraglauconia
 * †Paragoniozona
 * †Paraliospira
 * †Paramarshallena
 * Parametaria
 * †Paramorea
 * †Paranassa
 * †Paraneistrolepis
 * †Parangarenga
 * †Parangularia
 * †Paraplatyschisma
 * †Parapuractaeon
 * †Pararaphispira
 * †Paraseraphs
 * †Parasimplotyxis
 * †Parasyngenochilus
 * †Parasyrinx
 * †Parataphrus
 * †Paraterebra
 * †Paratrophon
 * †Paraturbo
 * †Paraviviana
 * †Parazebinella
 * †Pareora
 * †Pareuchelus
 * †Pareuryalox
 * †Parietiplicatum
 * †Parinotus
 * †Paronaella
 * †Parthenina
 * †Partubiola
 * †Partulida
 * †Parvacmea
 * †Parvimitra
 * †Parvirota
 * †Parviscala
 * †Parvisetia
 * †Parvisipho
 * †Parviviana
 * †Parvivoluta
 * †Pasitheola
 * Patella
 * †Patellastra
 * †Patellilabia
 * Patelloida
 * †Patellopsis
 * †Patellostium
 * †Patuxentrophon
 * †Paulonaria
 * †Pavora
 * †Paxula
 * †Payradeautia
 * †Paziella
 * †Pchelincevella
 * †Peasiella
 * †Pectinodonta
 * †Peculator
 * †Pedasiola
 * Pedicularia
 * Pedipes
 * †Peelerophon
 * †Pegocomptus
 * †Pelicaria
 * †Pellasimnia
 * †Pellax
 * †Penion
 * †Pentagonodiscus
 * †Pentaptyxis
 * †Peonza
 * †Pepta
 * †Peracle
 * †Pereiraea
 * †Periaulax
 * †Pericarinata
 * †Peridipsaccus
 * †Peringiella
 * †Perissitys
 * †Perissodonta
 * †Perissolax
 * †Perissoptera
 * †Peristernia
 * †Peritrophon
 * †Pernericirrus
 * †Perneritrochus
 * †Perotrochus
 * †Perplicaria
 * †Perrinia
 * †Perrona
 * †Perse
 * Persicula
 * †Personella
 * †Personopsis
 * †Perucerithium
 * †Peruchilus
 * †Peruficus
 * †Perulithes
 * †Peruluta
 * †Peruniscus
 * †Perustrombus
 * †Peruviella
 * †Peruvispira
 * †Pervicacia
 * Petaloconchus
 * †Petersia
 * †Petrafixia
 * †Petropoma
 * †Peyrotia
 * †Pezantia
 * Phalium
 * †Phandella
 * †Phanerolepida
 * †Phaneroptyxis
 * †Phanerotinus
 * †Phanerotrema
 * †Pharetrolites
 * †Pharkidonotus
 * Phasianella
 * †Phasianema
 * †Phasianochilus
 * †Phasianotrochus
 * †Phenacovolva
 * Phenatoma
 * Philine
 * †Philippia
 * †Philoxene
 * †Pholidotoma
 * †Phoracanthus
 * †Phorculus
 * †Phorcus
 * Phos
 * †Phosinella
 * †Phragmolites
 * †Phragmosphaera
 * †Phrontis
 * †Phryx
 * †Phyllocheilus
 * †Phyllonotus
 * †Phymatopleura
 * †Pictavia
 * †Pictiformes
 * †Pictoscala
 * †Piestochilus
 * †Pietteia
 * †Pileolus
 * †Pinquigemmula
 * †Pirena
 * †Pirenella
 * †Pirgos
 * †Pirper
 * †Pirsila
 * †Pisanella
 * Pisania
 * †Pisanianura
 * †Pisinna
 * †Pisulina
 * †Pithodea
 * †Pittella
 * †Plagiothyra
 * Planaxis
 * †Planicollonia
 * †Planitrochus
 * †Planolateralus
 * †Planospirina
 * †Planotectus
 * †Planozone
 * †Planpyrgiscus
 * †Platyacra
 * †Platybassis
 * †Platyceras
 * †Platychilina
 * †Platyconcha
 * †Platyconus
 * †Platycythara
 * Platyla
 * †Platyloron
 * †Platyoptera
 * †Platyschisma
 * †Platyteichum
 * †Platyworthenia
 * †Platyzona
 * †Plectocion
 * †Plectonotoides
 * †Plectonotus
 * †Pleia
 * †Pleioptygma
 * †Plentaria
 * †Plesioacirsa
 * †Plesiocerithium
 * †Plesioptygmatis
 * †Plesiothyreus
 * †Plesiotriton
 * †Plesiotrochus
 * †Plethospira
 * †Pleuracme
 * †Pleuratella
 * †Pleurofusia
 * †Pleurolimnaea
 * †Pleuroliria
 * †Pleuromphalus
 * †Pleuronotus
 * Pleuroploca
 * †Pleuropyramis
 * †Pleurorima
 * Pleurotomaria
 * †Pleurotomella
 * †Pleurotomoides
 * †Plicafoliosa
 * †Plicarcularia
 * †Plicifusus
 * †Pliciscala
 * †Plicobulla
 * †Pliconacca
 * †Plocezyga
 * †Plochelaea
 * †Ploconema
 * †Plocostoma
 * †Plocostylus
 * †Plotophysops
 * Poirieria
 * †Poleumita
 * †Polinella
 * Polinices
 * †Poliniciella
 * Pollia
 * †Polygyreulima
 * †Polygyrina
 * †Polystira
 * †Polytremaria
 * †Pomahakia
 * Pomaulax
 * †Ponderia
 * †Ponocyclus
 * †Popenella
 * †Popenoeum
 * †Porcellia
 * †Pornosis
 * †Poropteron
 * †Portlockiella
 * †Portoricia
 * †Postalia
 * †Potamides
 * †Potamidopsis
 * †Powellisetia
 * †Praehyalocylis
 * †Praelittorina
 * †Praematuratropis
 * †Praenatica
 * †Praestomatia
 * †Preangeria
 * †Prestrombus
 * †Priene
 * Primovula
 * †Prionovolva
 * †Priotrochus
 * †Priscaphander
 * †Priscoficus
 * †Priscofusus
 * †Prisogaster
 * †Pristimerica
 * †Pristinacca
 * †Proacirsa
 * †Proadusta
 * †Procalpurnus
 * †Procampanile
 * †Procancellaria
 * †Procerapex
 * †Procerithiopsis
 * †Procerithium
 * †Proclava
 * †Procominula
 * †Proconulus
 * †Prodiozoptyxis
 * †Proficus
 * †Profundialvania
 * †Progabbia
 * †Promartynia
 * †Promathilda
 * †Promourlonia
 * †Propemurchisonia
 * Propilidium
 * †Propustularia
 * †Proscala
 * †Proscutum
 * †Prosimnia
 * †Prosipho
 * †Prosolarium
 * †Prosoptychus
 * †Prosthenodon
 * †Proterato
 * †Protoatlanta
 * †Protobarleeia
 * †Protobusycon
 * †Protocalyptaea
 * †Protocypraea
 * †Protocypraedia
 * †Protodolium
 * †Protofusus
 * †Protoma
 * †Protonema
 * †Protopirula
 * †Protorcula
 * †Protorotella
 * †Protospirialis
 * †Protostylifera
 * †Protostylus
 * †Protosurcula
 * †Prototurbo
 * †Prototyphis
 * †Protuba
 * †Proturboella
 * †Proturritella
 * †Provermicularia
 * †Proxicharonia
 * †Proximitra
 * †Proxiuber
 * Prunum
 * †Psammodulus
 * †Psephaea
 * †Pseudalaria
 * †Pseudamaura
 * †Pseudaulicina
 * †Pseudavena
 * †Pseudoaclisina
 * †Pseudoaluco
 * †Pseudoaptyxis
 * †Pseudobaylea
 * †Pseudobrochidium
 * †Pseudobuccinum
 * †Pseudocancilla
 * †Pseudocassis
 * †Pseudochrysalis
 * †Pseudocirsope
 * †Pseudoclanculus
 * †Pseudocominella
 * †Pseudocryptaenia
 * †Pseudocymia
 * †Pseudodiartema
 * †Pseudodiloma
 * †Pseudofax
 * †Pseudofissurella
 * †Pseudofulgur
 * †Pseudofusia
 * †Pseudogaleodea
 * †Pseudoglauconia
 * †Pseudohercynella
 * †Pseudolacuna
 * †Pseudolatirus
 * †Pseudoliomesus
 * †Pseudoliotina
 * †Pseudoliva
 * †Pseudolyria
 * †Pseudomalaxis
 * †Pseudomelania
 * †Pseudomelatoma
 * †Pseudomesalia
 * †Pseudometula
 * †Pseudomorea
 * †Pseudompalotrochus
 * †Pseudomurchisonia
 * †Pseudoneptunea
 * †Pseudonerinea
 * †Pseudonina
 * †Pseudoninella
 * †Pseudoperissitys
 * †Pseudoperissolax
 * †Pseudophasianus
 * †Pseudophorus
 * †Pseudopisania
 * †Pseudoplatyceras
 * †Pseudoplocezyga
 * †Pseudorapa
 * †Pseudoraphitoma
 * †Pseudorhytidopilus
 * †Pseudorotella
 * †Pseudoscalites
 * †Pseudoscalites
 * †Pseudoschizogonium
 * †Pseudosetia
 * †Pseudostomatella
 * †Pseudotaphrus
 * †Pseudotectus
 * †Pseudotoma
 * †Pseudotorinia
 * †Pseudotritonium
 * †Pseudotrivia
 * †Pseudotruncatella
 * †Pseudotubina
 * †Pseudotylostoma
 * †Pseudovaricia
 * †Pseudovertagus
 * †Pseudowarthia
 * †Pseudozonaria
 * †Pseudozygopleura
 * †Psilarius
 * †Psilaxis
 * †Psilocochlis
 * †Ptereulima
 * †Pterocera
 * †Pterocerella
 * †Pterocheilos
 * †Pterochelus
 * †Pterodonta
 * †Pterodonticeras
 * †Pterolabrella
 * Pteropurpura
 * †Pterorytis
 * †Pterospira
 * †Pterotheca
 * Pterotrachea
 * Pterotyphis
 * †Pterygia
 * Pterynotus
 * †Ptomatis
 * †Ptychatractus
 * †Ptycheulimella
 * †Ptychobellerophon
 * †Ptychocaulus
 * †Ptychocerithium
 * †Ptychocylindrites
 * †Ptychogyra
 * †Ptychomphalina
 * †Ptychomphalus
 * †Ptychopotamides
 * †Ptychoris
 * †Ptychosalpinx
 * †Ptychosphaera
 * †Ptychospirina
 * †Ptychostoma
 * †Ptychosyca
 * †Ptychosyrinx
 * †Ptychozone
 * †Ptygmatis
 * Pugilina
 * †Pugnellus
 * †Puha
 * †Pulchrastele
 * †Pulchritima
 * Punctiscala
 * †Punctospira
 * Puncturella
 * †Puncturellopsis
 * †Punjabia
 * †Pupa
 * †Pupatonia
 * Puperita
 * †Pupillaea
 * †Pupillaria
 * †Puposyrnola
 * Purpura
 * †Purpuradusta
 * †Purpurellus
 * †Purpurina
 * †Purpuroidea
 * †Puruiana
 * †Puruninella
 * Pusia
 * †Pusillina
 * †Pusiolina
 * †Pusionella
 * Pustularia
 * †Pustulifer
 * Pusulla
 * †Putilla
 * †Putzeysia
 * †Pycnomphalus
 * †Pycnotrochus
 * †Pyktes
 * Pyramidella
 * †Pyramidelloides
 * †Pyramimitra
 * †Pyramistomia
 * †Pyramitoma
 * †Pyrazella
 * †Pyrazisinus
 * †Pyrazus
 * Pyrene
 * †Pyrenomitra
 * †Pyrenoturris
 * †Pyrgiscilla
 * Pyrgiscus
 * Pyrgocythara
 * †Pyrgolampros
 * †Pyrgolidium
 * †Pyrgotrochus
 * †Pyrgulina
 * †Pyrifusus
 * †Pyropsis
 * †Pyruclia
 * †Pyrulofusus
 * †Pyrunculus
 * †Pythmenema
 * †Pyxipoma

Q

 * †Quadricarina
 * †Quadrinervus
 * †Quassisipho
 * †Quimalea
 * †Quoyia

R

 * †Rabicea
 * †Radinista
 * †Raha
 * †Raincourtia
 * †Ramina
 * Ranella
 * †Ranellina
 * †Rangimata
 * †Ranularia
 * Rapana
 * †Raphischisma
 * †Raphispira
 * †Raphistoma
 * †Raphistomina
 * †Raphitoma
 * †Rapopsis
 * †Ratifusus
 * †Raulinia
 * †Ravitrona
 * †Ravnostomia
 * †Rectiplanes
 * †Recurvina
 * †Redocla
 * †Remera
 * †Remnita
 * Renea
 * †Reticulacella
 * †Reticuloturris
 * †Retiopustula
 * †Retipirula
 * †Retispira
 * †Retizafra
 * Retusa
 * †Reymentella
 * †Rhabdocolpus
 * †Rhabdoconcha
 * †Rhabdotocochlis
 * †Rhaphischisma
 * †Rhaphistomella
 * Rhinoclavus
 * †Rhinoderma
 * †Rhizorus
 * †Rhombella
 * †Rhomboidestoma
 * †Rhombopsis
 * †Rhombostoma
 * †Rhopalites
 * †Rhynchocerithium
 * †Rhynchocypraea
 * †Rhytidopilus
 * †Ricinella
 * Rictaxis
 * †Rigauxia
 * †Rimella
 * †Rimosodaphnella
 * Rimula
 * †Rimulopsis
 * †Rinaldoconchus
 * †Rinaldomphalus
 * Ringicula
 * †Ringiculella
 * †Ringiculina
 * †Ringiculocosta
 * †Ringiculopsis
 * †Ringiculoptycha
 * †Ringiculospongia
 * †Ringinella
 * †Ripleyella
 * †Risella
 * †Risellopsis
 * †Risselloidea
 * Rissoa
 * †Rissocerithium
 * Rissoina
 * †Rissolina
 * †Rissomangelia
 * †Rissopsetia
 * †Ritena
 * †Riuguhdrillia
 * †Robus
 * †Rochia
 * †Rolandomphalus
 * †Rollandiana
 * Roperia
 * †Rossiteria
 * †Rostellaca
 * †Rostellana
 * †Rostellaria
 * †Rostellinda
 * †Rostreulima
 * †Rostrocerithium
 * †Rotadiscoides
 * †Rothpeltzia
 * †Rothpletzella
 * †Rousseauspira
 * †Roxania
 * †Roxaniella
 * Roya
 * †Ruedemannia
 * †Rufilla
 * †Rugatiscala
 * †Rugiferia
 * †Rugobela
 * †Rugotyphis
 * †Rugulina
 * †Rumerloella

S

 * †Sabatia
 * †Sabaziella
 * †Sabia
 * †Sabinella
 * †Sablea
 * †Sabrinella
 * †Saccaroturris
 * †Saccoina
 * †Sagenella
 * †Sallya
 * †Salpingostoma
 * †Salterospira
 * †Sandbergeria
 * †Sanhaliotis
 * †Santia
 * †Sargana
 * †Sarmates
 * †Sarmaticus
 * †Sarmaturbo
 * †Sassia
 * †Scabrella
 * †Scabricola
 * †Scaevola
 * †Scalaetrochus
 * Scalaria
 * †Scalaronoba
 * †Scalaspira
 * †Scalenostoma
 * †Scalina
 * †Scaliola
 * †Scalites
 * †Scalitina
 * †Scalituba
 * †Scalptia
 * Scaphander
 * Scaphella
 * †Scaphellopsis
 * †Sceptrum
 * †Schilderia
 * †Schizobasis
 * †Schizogonium
 * †Schizolopha
 * †Schizopea
 * Schwartziella
 * Scissurella
 * Scissurona
 * †Scobinella
 * †Scobinodola
 * †Scoliostoma
 * Sconsia
 * †Scorbinidola
 * †Scrinium
 * †Scrobs
 * †Scrupus
 * †Sculpturea
 * †Scurriopsis
 * †Scutellastra
 * Scutus
 * †Searlesia
 * †Sediliopsis
 * †Seelya
 * †Seguenzia
 * Seila
 * †Seisa
 * †Sellinema
 * †Semahana
 * †Semiactaeon
 * †Semibittium
 * Semicassis
 * †Semicypraea
 * †Semineritina
 * †Seminola
 * †Semipirum
 * †Semisolarium
 * †Semistylifer
 * †Semiterebellum
 * †Semitriton
 * †Semitrivia
 * †Semitubina
 * †Semityphis
 * †Semivertagus
 * †Semperia
 * †Sentularia
 * Septa
 * †Sequania
 * †Seraphs
 * †Serpentubina
 * Serpulorbis
 * †Serpulospira
 * †Serrata
 * †Serratifusus
 * †Serratocerithium
 * †Serratotrochus
 * †Serrifusus
 * †Settsassia
 * †Sevanella
 * †Seymourosphaera
 * †Shansiella
 * †Shikamacirrus
 * †Shikokuspira
 * †Shwedagonia
 * Sigapatella
 * †Sigaretopsis
 * †Sigaretotrema
 * Sigatica
 * †Sigmesalia
 * Siliquaria
 * †Siluracmaea
 * †Siluriphorus
 * Simnia
 * †Sinaxila
 * †Sincola
 * Sinezona
 * †Singulitubus
 * †Sinistrella
 * †Sinistrospira
 * †Sinorificium
 * †Sinospira
 * †Sinuella
 * †Sinuina
 * †Sinuites
 * †Sinuitina
 * Sinum
 * †Sinuopea
 * †Sinuozyga
 * †Sinuspira
 * †Sinustomia
 * †Sinutropis
 * †Sinzowia
 * †Sipho
 * †Siphocypraea
 * †Siphonacmea
 * Siphonalia
 * Siphonaria
 * †Siphonochelus
 * †Siphonophyla
 * †Siphonorbis
 * †Siphopatella
 * †Siratus
 * †Sirius
 * †Sisenna
 * †Siskyouspira
 * †Skaptotion
 * †Skena
 * Smaragdia
 * †Smithiellia
 * †Socotora
 * †Sogdianella
 * †Sohlella
 * †Sohlia
 * †Sohlitella
 * †Solariaxis
 * Solariella
 * †Solarioconulus
 * †Solariorbis
 * †Solarium
 * †Solatia
 * †Soleniscus
 * †Solenosteira
 * †Sollariaxis
 * †Solutofusus
 * †Sorapisella
 * †Sororcula
 * †Sosiolytes
 * †Spanionema
 * †Sparella
 * Spectamen
 * Specula
 * †Speightia
 * †Spelaenacca
 * †Sphaerocina
 * †Sphaerocypraea
 * †Sphaeronassa
 * †Sphenosphaera
 * †Spinaspira
 * †Spineoterebra
 * †Spinicharybdis
 * †Spinigera
 * †Spiniscala
 * †Spinomelon
 * †Spinulrichospira
 * †Spiractaeon
 * †Spiraculinella
 * †Spiradaphne
 * †Spiralta
 * †Spirgvaleia
 * †Spirina
 * †Spirochrysalis
 * †Spirocirrus
 * †Spirocolpus
 * †Spirocrypta
 * †Spirocyclina
 * †Spirocyclus
 * †Spirodentalium
 * †Spiroecus
 * †Spirogalerus
 * †Spiroglyphus
 * Spirolaxis
 * †Spiromphalus
 * †Spironema
 * †Spironemella
 * †Spiroscala
 * †Spirostylus
 * †Spirotomaria
 * †Spirotropis
 * Splendrillia
 * †Spoelia
 * †Squamalinia
 * †Squarrosus
 * †Stachella
 * †Staffinia
 * †Stantonella
 * †Staphylaea
 * †Stazzania
 * †Stegocoelia
 * Stellaria
 * †Stellaxis
 * †Stelzneria
 * †Stenoloron
 * Stenorhytis
 * †Stenotis (gastropod)
 * †Stenozone
 * †Stephanoconus
 * †Stephanocosmia
 * †Stephanosalpinx
 * †Stephanozyga
 * †Stereokion
 * †Steromphala
 * Sthenorytis
 * Stigmaulax
 * Stilifer
 * †Stilla
 * †Stiracolpus
 * Stomatella
 * †Stomatia
 * †Stosicia
 * Stramonita
 * †Strangulites
 * †Straparella
 * †Straparollina
 * †Straparollus
 * †Strebloceras
 * †Strephona
 * †Strephonella
 * †Strepsidura
 * †Streptacis
 * †Streptocarina
 * †Streptochetus
 * †Streptodictyon
 * †Streptodiscus
 * †Streptolathyrus
 * †Streptopelma
 * †Streptotrochus
 * †Striactaeonina
 * †Striatesta
 * †Striaticostatum
 * †Striatiscala
 * †Strictohumerus
 * †Strigatella
 * †Strigillibuccinum
 * †Strigosella
 * †Striocarinata
 * †Striodostomia
 * †Strioterebrum
 * †Strioturbonilla
 * †Strobeus
 * †Strombiformis
 * Strombina
 * †Strombinella
 * †Strombinophos
 * †Stromboconus
 * †Strombolaria
 * †Strombopugnellus
 * Strombus
 * †Strominella
 * †Strongylocera
 * †Strophostylus
 * †Strotostoma
 * †Struthiochenopus
 * †Struthiolarella
 * Struthiolaria
 * †Struthiolariopsis
 * †Struthioptera
 * †Stuorella
 * †Sturgeonospira
 * †Stylidium
 * †Styliola
 * †Stylonema
 * †Styloplocus
 * †Suavodrillia
 * †Subcancilla
 * †Subclimax
 * †Subditotectarius
 * †Subninella
 * †Subpterynotus
 * †Subula
 * †Subuliscala
 * †Subulites
 * †Suchium
 * †Suessonia
 * †Sulcoactaeon
 * †Sulcocypraea
 * †Sulcogladius
 * †Sulconatica
 * †Sulcoretusa
 * †Sulcorinella
 * †Sulcosipho
 * †Sulcosubularia
 * †Sulcotrivia
 * †Sulcoturbonilla
 * †Sulculus
 * †Sundabittium
 * †Superstes
 * Supplanaxis
 * †Suprazonalis
 * †Surcula
 * †Surculina
 * †Surculites
 * †Surculoma
 * †Sveltella
 * †Sveltia
 * †Swainsonia
 * †Sycodes
 * †Sycopsis
 * †Sycostoma
 * †Sycotypus
 * †Sydaphera
 * †Sylvestrosphaera
 * †Symmetrocapulus
 * Synaptocochlea
 * †Syncera
 * †Syngenochelus
 * †Syntomodrillia
 * †Syrnola

T

 * †Tachyrhynchella
 * †Tachyrhynchus
 * †Taemasotrochus
 * †Taeniaturbo
 * †Taeniospira
 * †Tahudrilla
 * †Tahusyrinx
 * †Taieria
 * †Taioma
 * †Taita
 * †Takia
 * †Talahabia
 * †Talantodiscus
 * †Talityphis
 * Talopena
 * †Talostolida
 * Talparia
 * †Tanaliopsis
 * †Tanea
 * †Taniella
 * †Tanimasanoria
 * †Tantunia
 * †Taosia
 * †Taphrostomia
 * †Tapinotomaria
 * †Taramellia
 * †Taranis
 * †Tarantinaea
 * †Taron
 * †Tatara
 * †Tateiwaia
 * †Taurasia
 * †Tauricella
 * †Tauschia
 * †Taxonia
 * †Tectaplica
 * †Tectariopsis
 * Tectarius
 * †Tectifusus
 * Tectonatica
 * †Tectospira
 * Tectura
 * †Tectus
 * Tegula
 * †Teiichispira
 * †Teilostoma
 * Teinostoma
 * †Teinostomopsis
 * †Tejonia
 * †Telasco
 * †Teleochilus
 * †Teleoptyxis
 * Telescopium
 * †Teliochilus
 * †Telleria
 * †Temanella
 * †Tembrockia
 * †Temnodiscus
 * †Temnospira
 * †Temnotropis
 * Tenagodus
 * Tenaturris
 * †Teneposita
 * †Tenuiactaeon
 * †Tenuicerithium
 * †Tenuiscala
 * †Tephlon
 * †Terebellopsis
 * Terebellum
 * Terebra
 * Terebralia
 * †Terebraliopsis
 * †Terebrellina
 * †Terebrifusus
 * †Terebritoma
 * †Terefundus
 * †Terelimella
 * †Teremelon
 * †Teretia
 * †Teretrina
 * †Ternivoluta
 * †Tessarolax
 * Testudinalia
 * †Tetranota
 * †Tetraplica
 * †Tetraptyxis
 * †Tetratubispira
 * Thais
 * †Thaisella
 * †Thala
 * †Thalotia
 * †Thanetinassa
 * †Tharsiella
 * Thatcheria
 * †Thecopsella
 * †Thelecythara
 * †Theliostyla
 * †Thericium
 * †Thersitea
 * †Thesbia
 * †Thiarinella
 * †Thierachella
 * †Tholitoma
 * †Thorista
 * Thoristella
 * †Threavia
 * †Thylacus
 * †Tianjinospira
 * †Tiara
 * †Tiaracerithium
 * †Tiarellacerithium
 * †Tiberia
 * †Tibersyrnola
 * †Tibia
 * †Tibiaporrhais
 * †Tibiella
 * †Tiburnus
 * †Timisia
 * †Tintorium
 * †Tioria
 * †Tipua
 * †Tmetonema
 * †Toledonia
 * †Tomellana
 * †Tomopleura
 * †Tomostoma
 * †Tomyris
 * Tonna
 * †Torcula
 * †Torculoidella
 * †Torgnellus
 * †Torinia
 * †Tornatellaea
 * Tornus
 * †Torquatiscala
 * †Torquesia
 * †Torquesiella
 * †Torquifer
 * †Tortisipho
 * †Tortoliva
 * †Tournouerella
 * †Touzinia
 * †Toxoconcha
 * †Trachelochetus
 * †Trachoecus
 * †Trachybembix
 * †Trachydomia
 * †Trachynerita
 * Trachypollia
 * †Trachysma
 * †Trachyspira
 * †Trachytriton
 * †Tractoliria
 * †Tragula
 * †Trajana
 * †Trajanella
 * †Transmariaturris
 * †Transovula
 * †Transylvanella
 * †Tremanotus
 * †Trepospira
 * †Tretospira
 * †Triadoskenea
 * †Trianglospira
 * †Triangularia
 * †Triaracerithium
 * †Triassocirrus
 * †Tribia
 * †Trichosirius
 * Trichotropis
 * Tricolia
 * †Tricornis
 * †Tridactylus
 * †Triforis
 * †Trigonostoma
 * †Trimalaxis
 * Trimusculus
 * Triphora
 * †Tripia
 * †Tripidotomaria
 * †Triploca
 * †Tripterotyphis
 * Triptychus
 * †Tristichotrochus
 * †Tritiaria
 * Tritonalia
 * †Tritonatractus
 * †Tritonomangilia
 * †Tritonophon
 * †Tritonopsis
 * †Trituba
 * †Triumphis
 * Trivia
 * †Triviella
 * †Trivirostra
 * †Trobus
 * †Trochacanthus
 * †Trochactaeon
 * †Trochactaeonina
 * †Trochalia
 * †Trochita
 * †Trochocerithium
 * †Trochodon
 * †Trochomphalus
 * †Trochonema
 * †Trochonemella
 * †Trochonemopsis
 * †Trochonerita
 * †Trochopsidea
 * †Trochotectus
 * †Trochotoma
 * †Trochotomaria
 * †Trochotrochus
 * †Trochotugurium
 * †Trochoturbella
 * Trochus
 * †Trominina
 * Trona
 * †Troostella
 * †Tropaeas
 * Trophon
 * †Trophonopsis
 * †Trophosycon
 * †Tropicolpus
 * †Tropidodiscus
 * Tropidophora
 * †Tropidostropha
 * †Tropisurcula
 * †Trubosta
 * †Truncaria
 * †Trunculariopsis
 * †Tryonella
 * †Trypanaxis
 * †Trypanocochlea
 * †Trypanostylus
 * †Trypanotoma
 * †Trypanotopsis
 * †Trypanotrochus
 * †Tubena
 * †Tuberleviathana
 * †Tubicauda
 * †Tubina
 * †Tubiola
 * †Tubomphalus
 * †Tudicla
 * †Tudiclana
 * †Tudicula
 * †Tudorella
 * †Tugali
 * †Tugurium
 * †Tulochilus
 * †Tumidiacirsa
 * Tumulus (subfamily of Gibbula)
 * †Tundora
 * †Turbinea
 * Turbinella
 * †Turbinilopsis
 * †Turbinopsis
 * Turbo
 * †Turbocheilus
 * †Turboella
 * †Turboidea
 * †Turbonellina
 * Turbonilla
 * †Turbonitella
 * †Turbonomaria
 * †Turbonopsis
 * Turcica
 * †Turehua
 * †Turriclavis
 * †Turricolumbus
 * †Turricula
 * †Turriculina
 * †Turrifulger
 * †Turrina
 * †Turrinosyrinx
 * †Turriola
 * Turris
 * †Turriscala
 * Turritella
 * †Turritellopsis
 * †Turritoma
 * †Turritriton
 * †Tychobrachea
 * †Tychonia
 * †Tylocassis
 * Tylochilus
 * †Tylodinella
 * †Tylospira
 * †Tylostoma
 * †Tylotrochus
 * †Tylozone
 * †Tympanotonos
 * †Typhina
 * †Typhinellus
 * Typhis
 * †Typhlomangelia
 * †Tyrannoberingius
 * †Tyrsoecus

U

 * †Uberella
 * †Uchauxia
 * †Ulfa
 * †Ulrichospira
 * †Umbilia
 * †Umbonellina
 * Umbonium
 * †Umbospira
 * †Umbotrochus
 * †Umbotropis
 * Umbraculum
 * †Umpquaia
 * †Undiscala
 * †Undulabucania
 * †Undularia
 * †Unedogemmula
 * †Unicarinata
 * Unitas
 * †Upella
 * †Urceolabrum
 * †Urgonella
 * †Urkutitoma
 * †Uromitra
 * Urosalpinx
 * †Uttleya
 * †Uvanilla
 * †Uxia
 * †Uzita

V

 * †Vaderos
 * †Vaginella
 * †Valanginella
 * †Valfinia
 * Vanikoro
 * †Vanikoropsis
 * †Vanitrochus
 * †Vanpalmer
 * †Varicobela
 * †Varicosipho
 * †Varicospira
 * †Varpalmeria
 * Vasum
 * †Vaughanites
 * †Veatchia
 * †Velainella
 * †Velatella
 * †Velates
 * Velutina
 * †Ventricaria
 * †Ventrilia
 * †Vergnesia
 * Vermetus
 * Vermicularia
 * †Vernedia
 * †Vernelia
 * †Verruturris
 * †Vesanula
 * †Vestulia
 * †Veterator
 * †Vetridrillia
 * †Vexillitra
 * Vexillum
 * †Vexinia
 * †Vexithara
 * †Vicarya
 * †Vicaryella
 * †Vicetia
 * †Vicinocerithium
 * †Vigescentis
 * †Vincenturris
 * †Virgella
 * †Viridibuccinum
 * †Viriola
 * †Visitator
 * †Vistulia
 * Vitrinella
 * †Vitrinellops
 * †Vitta
 * †Vitularia
 * †Vivanella
 * †Volema
 * Voluspa (subspecies of Pyramidella)
 * Voluta
 * †Volutilithes
 * †Volutoconus
 * †Volutocorbis
 * †Volutoderma
 * †Volutolithes
 * Volutomitra
 * †Volutomorpha
 * †Volutopsius
 * †Volutospina
 * Volva
 * †Volvaria
 * †Volvariella
 * Volvarina
 * †Volvarinella
 * †Volvocylindrites
 * Volvulella
 * †Voorwindia
 * †Vorticina
 * †Vouastia

W

 * †Waihaoia
 * †Waikura
 * †Waimatea
 * †Waipaoa
 * †Waisiolia
 * †Waitara
 * †Walnichollsia
 * †Waluia
 * †Wangacteon
 * †Wangaloa
 * †Warthia
 * †Wateletia
 * †Watsonia (subgenus of Parastrophia)
 * †Weeksia
 * †Wellergyi
 * †Wendella
 * †Westerna
 * †Wexfordia
 * †Whitecliffia
 * †Whitneya
 * †Whitneyella
 * Williamia
 * †Willungia
 * †Wilsoniconcha
 * †Wisonsinella
 * †Woehrmannia
 * †Woodsalia
 * †Woodsella
 * †Worthenia
 * †Wortheniella
 * †Wortheniopsis
 * †Wyatella

X

 * Xancus
 * †Xanthochorus
 * †Xenogalea
 * †Xenophalium
 * Xenophora
 * Xenotrophon
 * †Xenuroturris
 * †Xestosurcula
 * †Xizangospira
 * †Xuwenospira
 * †Xymene
 * †Xymenella
 * †Xystrella

Y

 * †Yasila
 * †Yingicus
 * †Yochelsonospira
 * †Yunnania

Z

 * †Zaclys
 * Zafra
 * †Zalipais
 * †Zalozone
 * †Zanassarina
 * †Zaphon
 * †Zardinistylus
 * †Zardubinihelix
 * Zaria (subgenus of Turritella)
 * Zeacolpus
 * †Zeacrypta
 * †Zeacumanthus
 * †Zeacuminia
 * †Zeadmete
 * †Zeapollia
 * Zebina
 * †Zebittium
 * †Zefallacia
 * †Zegalerus
 * †Zeidora
 * †Zekilla
 * †Zelandiella
 * †Zemacies
 * †Zemira
 * †Zemitrella
 * †Zenbinostoma
 * †Zenepos
 * †-Zephos (synonym of Cominella)
 * †Zeradina
 * †Zethalia
 * †Zeuxis
 * †Zikkuratia
 * †Zinolia
 * †Zinsitys
 * †Zircia
 * †Zittelia
 * †Ziziphinus
 * †Zoila
 * Zonaria
 * †Zonarina
 * †Zosterospira
 * †Zygites
 * †Zygopleura