# Taxonomy of the Gastropoda (Bouchet et al., 2017)

The taxonomy of the Gastropoda as it was revised in December 2017 by Philippe Bouchet and eight other authors, is a publication which lays out a newly revised system for the scientific classification of gastropod mollusks. The same work also included the taxonomy of monoplacophorans.
The publication is entitled, "Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families"; it was published by the journal Malacologia.

## Summary of the taxonomy

The following cladogram shows a summary of the new gastropod taxonomy, according to the work's Contents section:

## †Paleozoic molluscs of uncertain position within Gastropoda or Monoplacophora

(Unassigned to Superfamily)
* †Family Khairkhaniidae Missarzhevsky, 1989
* †Family Ladamarekiidae Frýda, 1998
* †Family Metoptomatidae Wenz, 1938
* †Family Protoconchoididae Geyer, 1994 (=Patelliconidae Fryda, 1998)
†Superfamily Archinacelloidea Knight, 1952
* †Family Archinacellidae Knight, 1952
* †Family Archaeopragidae Horný, 1963

## †Subclass Amphigastropoda
### †Order Bellerophontida

†Superfamily Bellerophontoidea McCoy, 1852
* †Family Bellerophontidae McCoy, 1852
** †Subfamily Bellerophontinae McCoy, 1852 (=Liljevallospiridae Golikov & Starobogatov, 1989)
** †Subfamily Bucanopsinae Wahlman, 1992
** †Subfamily Cymbulariinae Horný, 1963
** †Subfamily Bellerophontinae Knight, 1956
* †Family Bucanellidae Koken, 1925
* †Family Bucaniidae Ulrich & Scofield, 1897
** †Subfamily Bucaniinae Knight, 1956 (=Grandostomatinae Horný, 1962)
** †Subfamily Plectonotinae Boucot & Yochelson, 1966
*** †Tribe Plectonotini Boucot & Yochelson, 1966
*** †Tribe Boucotonotini Frýda, 1999
** †Subfamily Salpingostomatinae Koken, 1925
** †Subfamily Undulabucaniinae Wahlman, 1992
* †Family Euphemitidae Knight, 1956
** †Subfamily Euphemitinae Knight, 1956
** †Subfamily Paleuphemitinae Frýda, 1999
* †Family Pterothecidae P. Fischer, 1883
** †Subfamily Pterothecinae P. Fischer, 1883
** †Subfamily Carinaropsinae Ulrich & Scofield, 1897
** †Subfamily Pedasiolinae Wahlman, 1992
* †Family Sinuitidae Dall, 1913
** †Subfamily Sinuitinae Dall, 1913 (=Protowarthiidae Ulrich & Scofield, 1897)
** †Subfamily Aiptospirinae Wang, 1980
** †Subfamily Hispanosinuitinae Frýda & Gutierrez-Marco, 1996
* †Family Tremanotidae Naef, 1911
* †Family Tropidodiscidae Knight, 1956 (=Temnodiscinae Horný, 1963)

## †Subclass Archaeobranchia
### †Order Pelagiellida

†Superfamily Pelagielloidea Knight, 1956 (=Orthostrophina)
* †Family Pelagiellidae Knight, 1956 (=Proeccyliopteridae Kobayashi, 1962; =Protoscaevogyridae Kobayashi, 1962)
* †Family Aldanellidae Linsley & Kier, 1984

### †Order Helcionellida

†Superfamily Scenelloidea S. A. Miller, 1889
* †Family Scenellidae S. A. Miller, 1889
** †Subfamily Scenellinae S. A. Miller, 1889 (=Palaeacmaeidae Grabau & Shimer, 1909; =Hampilininae Kobayashi, 1958; =Eosoconidae Yu, 1979; =Merismoconchidae Yu, 1979; =Shelbyoceratidae Stinchcomb, 1986; =Actinoconidae Starobogatov & Moskalev, 1987; =Yangtzemerismatinae Yu, 1987; =Marocellidae Topper, Brock, Skovsted & Paterson, 2009)
** †Subfamily Yangtzeconinae Yu, 1979 (=Ceratoconidae Missarzhevsky, 1989)
* †Family Coreospiridae Knight, 1947 (=Archaeospiridae Yu, 1979; =Yangtzespirinae Yu, 1984; =Latouchellidae Golikov & Starobogatov, 1989)
* †Family Carinopeltidae Parkhaev, 2013 (=Igarkiellidae Parkhaev, 2001)
†Superfamily Yochelcionelloidea Runnegar & Jell, 1976
* †Family Yochelcionellidae Runnegar & Jell, 1976 (=Enigmaconidae MacKinnon, 1985)
* †Family Stenothecidae Runnegar & Jell, 1980
** †Subfamily Stenothecinae Runnegar & Jell, 1980 (=Mellopegmidae Parkhaev, 2001)
** †Subfamily Watsonellinae Parkhaev, 2001
* †Family Securiconidae Missarzhevsky, 1989 (=Rugaeconidae Vassiljeva, 1990; =Trenellidae Parkhaev, 2001)

## †Paleozoic basal taxa that are certainly Gastropoda

(Unassigned to Superfamily)
* †Family Codonocheilidae S. A. Miller, 1889
* †Family Craspedostomatidae Wenz, 1938
** †Subfamily Craspedostomatinae Wenz, 1938
** †Subfamily Bucanospirinae Wenz, 1938
* †Family Crassimarginatidae Frýda, Blodgett & Lenz, 2002
* †Family Discohelicidae Schröder, 1995
* †Family Isospiridae Wangberg-Eriksson, 1964
* †Family Yuopisthonematidae Nützel, 2017 (=Opisthonematidae Yu, 1976)
* †Family Paraturbinidae Cossmann, 1916
* †Family Pragoserpulinidae Frýda, 1998
* †Family Raphistomatidae Koken, 1896 (=Ceratopeidae Yochelson & Bridge, 1957)
* †Family Rhytidopilidae Starobogatov, 1976
* †Family Scoliostomatidae Frýda, Blodgett & Lenz, 2002
** †Subfamily Scoliostomatinae Frýda, Blodgett & Lenz, 2002
** †Subfamily Mitchelliinae Frýda, Blodgett & Lenz, 2002
* †Family Sinuopeidae Wenz, 1938
** †Subfamily Sinuopeinae Wenz, 1938
** †Subfamily Platyschismatinae Knight, 1956
** †Subfamily Turbonellininae Knight, 1956
†Superfamily Clisospiroidea S. A. Miller, 1889 (=Mimospirina)
* †Family Clisospiridae S. A. Miller, 1889
** †Subfamily Clisospirinae S. A. Miller, 1889
** †Subfamily Atracurinae Horný, 1964
** †Subfamily Progalerinae Knight, 1956
** †Subfamily Trochoclisinae Horný, 1964
* †Family Onychochilidae Koken, 1925
** †Subfamily Onychochilinae Koken, 1925
** †Subfamily Hyperstropheminae Horný, 1964
** †Subfamily Scaevogyrinae Wenz, 1938
†Superfamily Euomphaloidea White, 1877
* †Family Euomphalidae White, 1877
** †Subfamily Euomphalinae White, 1877 (=Schizostomatidae Bronn, 1849; =Polytropidae Ulrich, 1897; =Straparolinae Cossmann, 1916; =Poleumitidae Wenz, 1938)
** †Subfamily Odontomariinae Frýda, Heidelberger & Blodgett, 2006
* †Family Euomphalopteridae Koken, 1896
** †Subfamily Euomphalopterinae Koken, 1896
** †Subfamily Spinicharybdiinae Rohr, Blodgett & Frýda, 2008
* †Family Helicotomidae Wenz, 1938
* †Family Lesueurillidae P. J. Wagner, 2002
* †Family Omphalocirridae Wenz, 1938
* †Family Omphalotrochidae Knight, 1945
* †Family Straparollinidae P. J. Wagner, 2002
†Superfamily Loxonematoidea Koken, 1889
* †Family Loxonematidae Koken, 1889 (=Holopellidae Koken, 1896; =Omospirinae Wenz, 1938)
* †Family Palaeozygopleuridae Horný, 1955
†Superfamily Macluritoidea Carpenter, 1861
* †Family Macluritidae Carpenter, 1861
†Superfamily Ophiletoidea Koken, 1907
* †Family Ophiletidae Koken, 1907 (=Ecculiomphalinae Wenz, 1938)
†Superfamily Oriostomatoidea Koken, 1896
* †Family Oriostomatidae Koken, 1896
* †Family Tubinidae Knight, 1956
†Superfamily Palaeotrochoidea† Knight, 1956
* †Family Palaeotrochidae Knight, 1956
†Superfamily Trochonematoidea Zittel, 1895
* †Family Trochonematidae Zittel, 1895
* †Family Lophospiridae Wenz, 1938 (=Gyronematinae Knight, 1956; =Ruedemaniinae Knight, 1956)

## Subclass Patellogastropoda
### Order Patellida

Superfamily Eoacmaeoidea Nakano & Ozawa, 2007
* Family Eoacmaeidae Nakano & Ozawa, 2007
Superfamily Patelloidea Rafinesque, 1815
* Family Patellidae Rafinesque, 1815
Superfamily Lottioidea Gray, 1840
* Family Lottiidae Gray, 1840
** Subfamily Lottiinae Gray, 1840
*** Tribe Lottiini Gray, 1840
*** Tribe Patelloidini Chapman & Gabriel, 1923
** Subfamily Tecturinae Gray, 1847
* Family Acmaeidae Forbes, 1850 (=Rhodopetalinae Lindberg, 1981; =Erginini Lindberg, 1990)
* †Family Damilinidae Horný, 1961
* Family Lepetidae Gray, 1850
** Subfamily Lepetinae Gray, 1850
** Subfamily Propilidiinae Thiele, 1891
* †Family Lepetopsidae McLean, 1990
* Family Nacellidae Thiele, 1891 (=Bertiniidae Jousseaume, 1883)
* Family Neolepetopsidae McLean, 1990
* Family Pectinodontidae Pilsbry, 1891

## Subclass Neomphaliones
### Order Neomphalida

Superfamily Neomphaloidea McLean, 1981
* Family Neomphalidae McLean, 1981 (=Cyathermiidae McLean, 1990)
* Family Melanodrymiidae Salvini-Plawen & Steiner, 1995
* Family Peltospiridae McLean, 1989

### Order Cocculinida

Superfamily Cocculinoidea Dall, 1882
* Family Cocculinidae Dall, 1882
* Family Bathysciadiidae Dautzenberg & H. Fischer, 1900 (=Bathypeltidae Moskalev, 1971)

## Subclass Vetigastropoda
### †Paleozoic taxa of uncertain position

* †Family Holopeidae Cossmann, 1908
* †Family Micromphalidae J. A. Harper, 2016

### Order Pleurotomariida

†Superfamily Eotomarioidea Wenz, 1938
* †Family Eotomariidae Wenz, 1938
** †Subfamily Eotomariinae Wenz, 1938 (=Liospirinae Knight, 1956)
*** †Tribe Eotomariini Wenz, 1938
*** †Tribe Deseretospirini Gordon & Yochelson, 1987
*** †Tribe Glabrocingulini Gordon & Yochelson, 1987
** †Subfamily Neilsoniinae Knight, 1956
*** †Tribe Neilsoniini Knight, 1956
*** †Tribe Spirovallini Waterhouse, 2001
* †Family Gosseletinidae Wenz, 1938
** †Subfamily Gosseletininae Wenz, 1938
** †Subfamily Coelozoninae Knight, 1956
*** †Tribe Coelozonini Knight, 1956 (=Euryzoninae P. J. Wagner, 2002)
*** †Tribe Planozonini Knight, 1956
** †Subfamily Triangulariinae Vostokova, 1960
* †Family Luciellidae Knight, 1956
* †Family Phanerotrematidae Knight, 1956
* †Family Pseudoschizogoniidae Bandel, 2009
* †Family Wortheniellidae Bandel, 2009
†Superfamily Murchisonioidea Koken, 1896
* †Family Murchisoniidae Koken, 1896
** †Subfamily Murchisoniinae Koken, 1896 (=Hormotomidae Wenz, 1938)
** †Subfamily Cheeneetnukiinae Blodgett & Cook, 2002
* †Family Farewelliidae Mazaev, 2011
* †Family Plethospiridae Wenz, 1938 (=Pithodeinae Wenz, 1938)
* †Family Ptychocaulidae Mazaev, 2011
Superfamily Pleurotomarioidea Swainson, 1840
* Family Pleurotomariidae Swainson, 1840
* †Family Catantostomatidae Wenz, 1938
* †Family Lancedelliidae Bandel, 2009
* †Family Phymatopleuridae Batten, 1956
* †Family Polytremariidae Wenz, 1938
* †Family Portlockiellidae Batten, 1956
* †Family Rhaphischismatidae Knight, 1956
* †Family Stuorellidae Bandel, 2009
* †Family Trochotomidae Cox, 1960 (1934) (=Ditremariinae Haber, 1934)
* †Family Zygitidae Cox, 1960
†Superfamily Porcellioidea Koken, 1895
* †Family Porcelliidae Koken, 1895
** †Subfamily Porcelliinae Koken, 1895
** †Subfamily Agnesiinae Knight, 1956
*** †Tribe Agnesiini Knight, 1956
*** †Tribe Anoriostomatini Frýda & Farrell, 2005
* †Family Cirridae Cossmann, 1916
** †Subfamily Cirrinae Cossmann, 1916
** †Subfamily Platyacrinae Wenz, 1938 (=Hesperocirrinae O. Haas, 1953)
** †Subfamily Cassianocirrinae Bandel, 1993
* †Family Pavlodiscidae Frýda, 1998
†Superfamily Pseudophoroidea S. A. Miller, 1889
* †Family Planitrochidae Knight, 1956
* †Family Pseudophoridae S. A. Miller, 1889 (=Palaeonustidae Wenz, 1938)
†Superfamily Ptychomphaloidea Wenz, 1938
* †Family Ptychomphalidae Wenz, 1938 (=Ptychomphalinini Wenz, 1938; =Mourloniini Yochelson & Dutro, 1960)
* †Family Rhaphistomellidae Bandel, 2009
†Superfamily Schizogonioidea Cox, 1960
* †Family Schizogoniidae Cox, 1960
* †Family Pseudowortheniellidae Bandel, 2009
†Superfamily Sinuspiroidea Mazaev, 2011
* †Family Sinuspiridae Mazaev, 2011

### Order Seguenziida

Superfamily Seguenzioidea Verrill, 1884
* Family Seguenziidae Verrill, 1884
** Subfamily Seguenziinae Verrill, 1884
*** Tribe Seguenziini Verrill, 1884
*** Tribe Fluxinellini B. A.Marshall, 1991 (=Ancistrobasidae Bandel, 2010)
** Subfamily Asthelysinae B. A.Marshall, 1991
** Subfamily Davisianinae Egorova, 1972 (=Putillinae F. Nordsieck, 1972; =Oligomeriinae Egorov, 2000)
** Subfamily Guttulinae Goryachev, 1987
* Family Cataegidae McLean & Quinn, 1987
* Family Chilodontaidae Wenz, 1938
* Family Choristellidae Bouchet & Warén, 1979
* Family Eucyclidae Koken, 1896 (=Amberleyidae Wenz, 1938; =Calliotropini Hickman & McLean, 1990; =Turcicidae Bandel, 2010)
* †Family Eucycloscalidae Gründel, 2007
* Family Eudaroniidae Gründel, 2007
* †Family Eunemopsidae Bandel, 2010
* †Family Lanascalidae Bandel, 1992
* †Family Laubellidae Cox, 1960
* Family Pendromidae Warén, 1991
* †Family Pseudoturcicidae Bandel, 2010
* †Family Sabrinellidae Bandel, 2010
* Family Trochaclididae Thiele, 1928 (=Acremodontinae B. A. Marshall, 1983)

### Order Lepetellida

Superfamily Lepetelloidea Dall, 1882
* Family Lepetellidae Dall, 1882
* Family Addisoniidae Dall, 1882
** Subfamily Addisoniinae Dall, 1882
** Subfamily Helicopeltinae B. A. Marshall, 1996
* Family Bathyphytophilidae B. A. Marshall, 1986
* Family Caymanabyssiidae Moskalev, 1978
* Family Cocculinellidae Moskalev, 1971
* Family Osteopeltidae B. A. Marshall, 1987
* Family Pseudococculinidae Hickman, 1983
* Family Pyropeltidae McLean & Haszprunar, 1987
Superfamily Fissurelloidea Fleming, 1822
* Family Fissurellidae Fleming, 1822
** Subfamily Fissurellinae Fleming, 1822
** Subfamily Diodorinae Odhner, 1932
** Subfamily Emarginulinae Children, 1834 (=Rimulidae Anton, 1838; =Fissurellideini Pilsbry, 1890; =Zeidoridae Naef, 1911; =Scutini Christiaens, 1973; =Clypidinidae Golikov & Starobogatov, 1989
** Subfamily Hemitominae Kuroda, Habe & Oyama, 1971
Superfamily Haliotoidea Rafinesque, 1815
* Family Haliotidae Rafinesque, 1815 (=Deridobranchinae Gray, 1847
* †Family Temnotropidae Cox, 1960
Superfamily Lepetodriloidea McLean, 1988
* Family Lepetodrilidae McLean, 1988 (=Gorgoleptidae McLean, 1988; =Clypeosectidae McLean, 1989)
* Family Sutilizonidae McLean, 1989 (=Temnocinclinae McLean, 1989)
Superfamily Scissurelloidea Gray, 1847
* Family Scissurellidae Gray, 1847 (=Depressizoninae Geiger, 2003)
* Family Anatomidae McLean, 1989 (=Schizotrochidae Iredale & McMichael, 1962)
* Family Larocheidae Finlay, 1927

### Order Trochida

Superfamily Trochoidea Rafinesque, 1815
* Family Trochidae Rafinesque, 1815
** Subfamily Trochinae Rafinesque, 1815 (=Pyramidinae Gray, 1847)
** Subfamily Alcyninae Williams, Donald, Spencer & Nakano, 2010
** Subfamily Cantharidinae Gray, 1857 (=Pagodatrochidae Bandel, 2010)
** Subfamily Chrysostomatinae Williams, Donald, Spencer & Nakano, 2010
** Subfamily Fossarininae Bandel, 2009
** Subfamily Halistylinae Keen, 1958
** Subfamily Kaiparathininae B. A. Marshall, 1993
** Subfamily Monodontinae Gray, 1857
** Subfamily Stomatellinae Gray, 1840 (=Stomatiidae Carpenter, 1861)
** Subfamily Umboniinae H. Adams & A. Adams, 1854 (1840) (=Rotellinae Swainson, 1840; =Talopiidae Finlay, 1928; =Bankiviini Hickman & McLean, 1990; =Lirulariinae Hickman & McLean, 1990; =Monileini Hickman & McLean, 1990; =Isandini Hickman, 2003)
* Family Angariidae Gray, 1857 (=Delphinulinae Stoliczka, 1868)
* †Family Anomphalidae Wenz, 1938
* †Family Araeonematidae Nützel, 2012
* Family Areneidae McLean, 2012
* Family Calliostomatidae Thiele, 1924 (1847)
** Subfamily Calliostomatinae Thiele, 1924 (1847) (=Ziziphininae Gray, 1847)
** †Subfamily Callotrochinae Szabó, 2011
** Subfamily Fautricinae B. A. Marshall, 1995
** Subfamily Margarellinae Williams, 2013
** Subfamily Thysanodontinae B. A. Marshall, 1988
** Subfamily Xeniostomatinae McLean, 2012
* Family Colloniidae Cossmann, 1917
** Subfamily Colloniinae Cossmann, 1917 (=Bothropomatinae Thiele, 1924; =Homalopomatinae Keen, 1960)
** †Subfamily Crossostomatinae Cox, 1960
*** †Tribe Tadeorbisinini Monari, Conti & Szabó, 1995
*** †Tribe Costataphrini Gründel, 2008
*** †Tribe Crossostomatini Cox, 1960
*** †Tribe Helicocryptini Cox, 1960
** †Subfamily Lewisiellinae Gründel, 2008
** Subfamily Liotipomatinae McLean, 2012
** Subfamily Moelleriinae Hickman & McLean, 1990
** †Subfamily Petropomatinae Cox, 1960
* Family Conradiidae Golikov & Starobogatov, 1987 (=Crosseolidae Hickman, 2013)
* †Family Nododelphinulidae Cox, 1960
* †Family Elasmonematidae Knight, 1956
* †Family Epulotrochidae Gründel, Keupp & Lang, 2017
* †Family Eucochlidae Bandel, 2002
* Family Liotiidae Gray, 1850
** Subfamily Liotiinae Gray, 1850 (=Cyclostrematidae P. Fischer, 1885)
** †Subfamily Brochidiinae Yochelson, 1956
** †Subfamily Dichostasiinae Yochelson, 1956
* Family Margaritidae Thiele, 1924 (=Margaritinae Stoliczka, 1868; =Gazidae Hickman & McLean, 1990)
* †Family Metriomphalidae Gründel, Keupp & Lang, 2017
* †Family Microdomatidae Wenz, 1938
** †Subfamily Microdomatinae Wenz, 1938
** †Subfamily Decorospirinae Blodgett & Frýda, 1999
* Family Phasianellidae Swainson, 1840
** Subfamily Phasianellinae Swainson, 1840 (=Eutropiinae Gray, 1847)
** Subfamily Gabrieloninae Hickman & McLean, 1990
** Subfamily Tricoliinae Woodring, 1928
* †Family Proconulidae Cox, 1960 (=Parataphrinae Calzada, 1989)
* †Family Sclarotrardidae Gründel, Keupp & Lang, 2017
* Family Skeneidae W. Clark, 1851 (=Delphinoideinae Thiele, 1924)
* Family Solariellidae Powell, 1951 (=Minoliinae Kuroda, Habe & Oyama, 1971)
* Family Tegulidae Kuroda, Habe & Oyama, 1971
* Family Turbinidae Rafinesque, 1815
** Subfamily Turbininae Rafinesque, 1815 (=Senectinae Swainson, 1840; =Imperatorinae Gray, 1847; =Astraliinae H. Adams & A. Adams, 1854; =Astraeinae Davies, 1935; =Bolmidae Delpey, 1941)
** †Subfamily Moreanellinae J. C. Fischer & Weber, 1997
** Subfamily Prisogastrinae Hickman & McLean, 1990
* †Family Tychobraheidae Horný, 1992
* †Family Velainellidae Vasseur, 1880

## Subclass Neritimorpha
### †Paleozoic taxa of uncertain position

†Superfamily Nerrhenoidea Bandel & Heidelberger, 2001
* †Family Nerrhenidae Bandel & Heidelberger, 2001
†Superfamily Platyceratoidea Hall, 1879
* †Family Platyceratidae Hall, 1879 (=Cyclonematidae P. Fischer, 1885; =Platyostomatidae S. A. Miller, 1889; =Strophostylidae Grabau & Shimer, 1909; =Palaeocapulidae Grabau, 1936)

### †Order Cyrtoneritida

* †Family Orthonychiidae Bandel & Frýda, 1999
* †Family Vltaviellidae Bandel & Frýda, 1999
** †Subfamily Vltaviellinae Bandel & Frýda, 1999
** †Subfamily Krameriellinae Frýda & Heidelberger, 2003

### Order Cycloneritida

Superfamily Helicinoidea
* Family Helicinidae
** Subfamily Helicininae (=Olygyridae; =Bourcierinae)
** Subfamily Ceratodiscinae
** †Subfamily Dimorphoptychiinae
** Subfamily Hendersoniinae
** Subfamily Stoastomatinae
** Subfamily Vianinae
* †Family Dawsonellidae
* †Family Deianiridae
* Family Neritiliidae
* Family Proserpinellidae (=Ceresinae)
* Family Proserpinidae (=Despoenidae)
Superfamily Hydrocenoidea
* Family Hydrocenidae (=Georissinae)
†Superfamily Naticopsoidea
* †Family Naticopsidae
** †Subfamily Naticopsinae
** †Subfamily Ampezzonaticopsinae
** †Subfamily Hologyrinae
* †Family Scalaneritinidae
* †Family Trachyspiridae
* †Family Tricolnaticopsidae
Superfamily Neritoidea
* Family Neritidae
** Subfamily Neritinae (=Neritellinae; =Protoneritidae)
** Subfamily Neritininae (=Orthopomatini; =Stenopomatini; =Septariini; =Theodoxinae)
** Subfamily Smaragdiinae
** †Subfamily Velatinae
* †Family Cortinellidae
* †Family Neridomidae
* †Family Neritariidae
** †Subfamily Neritariinae
** †Subfamily Oncochilinae
** †Subfamily Trachyneritariinae
* †Family Otostomidae
* †Family Parvulatopsidae
* Family Phenacolepadidae
** Subfamily Phenacolepadinae
** Subfamily Shinkailepadinae
* †Family Pileolidae
Superfamily Neritopsoidea
* Family Neritopsidae
** Subfamily Neritopsinae (=Titiscaniidae)
** †Subfamily Cassianopsinae
** †Subfamily Colubrellopsinae
** †Subfamily Paffrathiinae
* †Family Delphinulopsidae
** †Subfamily Delphinulopsinae
** †Subfamily Platychilininae
* †Family Fedaiellidae
* †Family Palaeonaricidae
* †Family Plagiothyridae
* †Family Pseudorthonychiidae
†Superfamily Symmetrocapuloidea
* †Family Symmetrocapulidae

## Subclass Caenogastropoda
### †Fossil taxa of uncertain position

Unassigned to Superfamily
* †Family Acanthonematidae
* †Family Ampezzanildidae
* †Family Coelostylinidae
* †Family Kittlidiscidae
* †Family Plicatusidae
* †Family Pragoscutulidae
* †Family Pseudomelaniidae (=Trajanellidae)
* †Family Spanionematidae
* †Family Spirostylidae
†Superfamily Dendropupoidea
* †Family Dendropupidae
* †Family Anthracopupidae
†Superfamily Peruneloidea
* †Family Perunelidae
* †Family Chuchlinidae
* †Family Imoglobidae
* †Family Sphaerodomidae
†Superfamily Subulitoidea
* †Family Subulitidae (=Macrocheilidae; =Bulimorphidae; =Fusispiridae)
* †Family Ischnoptygmatidae

### Grade Architaenioglossa

Superfamily Ampullarioidea
* Family Ampullariidae
Superfamily Cyclophoroidea
* Family Cyclophoridae
* Family Aciculidae (=Acmeidae)
* Family Craspedopomatidae
* Family Diplommatinidae
* †Family Ferussinidae
* Family Maizaniidae
* Family Megalomastomatidae
* Family Neocyclotidae
* Family Pupinidae
Superfamily Viviparoidea
* Family Viviparidae
* Family Pliopholygidae

### Cohort Sorbeoconcha

Unassigned to Superfamily
* †Family Brachytrematidae
* †Family Globocornidae
* †Family Prostyliferidae
†Superfamily Acteoninoidea
* †Family Acteoninidae
†Superfamily Orthonematoidea
* †Family Orthonematidae
* †Family Goniasmatidae
†Superfamily Palaeostyloidea
* †Family Palaeostylidae
†Superfamily Pseudozygopleuroidea
* †Family Pseudozygopleuridae (=Cyclozygidae; Eoptychiidae; Stephanozygidae)
* †Family Goniospiridae (=Polygyrinidae)
* †Family Pommerozygiidae
* †Family Protorculidae
* †Family Zygopleuridae
†Superfamily Soleniscoidea
* †Family Soleniscidae
* †Family Anozygidae
* †Family Meekospiridae

#### Subcohort Campanilimorpha

Superfamily Campaniloidea
* Family Campanilidae
* Family Ampullinidae
* †Family Diozoptyxidae
* †Family Gyrodidae
* †Family Metacerithiidae

#### Subcohort Cerithiimorpha

Taxa of uncertain position

#### Subcohort Hypsogastropoda
##### Superorder Latrogastropoda
###### Taxa of uncertain position
###### Order Neogastropoda
## Subclass Heterobranchia
### Infraclass Euthyneura
#### Taxa of uncertain position
#### Cohort Ringipleura
##### Subcohort Ringiculimorpha
###### Order Ringiculida
##### Subcohort Nudipleura
###### Order Nudibranchia

Suborder Doridina
* Infraorder Bathydoridoidei
* Infraorder Doridoidei
Suborder Cladobranchia

#### Cohort Tectipleura
##### Subcohort Euopisthobranchia
###### Order Pteropoda

Suborder Euthecosomata Suborder Pseudothecosomata Suborder Gymnosomata