Caenogastropoda
Family: Amnicolidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Amnicola rhombostoma | Access | |||||
| Bythinella eutrepha | (Paladilhe, 1867) | ? | Lez River, France | Missing | Access | |
| Bythinella gibbosa | Access | |||||
| Bythinella intermedia | Access | |||||
| Bythinella limnopsis | Access | |||||
| Bythinella mauritanica | Access | |||||
| Bythinella microcochlia | Letourneux & Bourguignat, 1887 | pre-1888 | Oued Melah (near Oudref), Tunisia | Extinct | Access | |
| Bythinella punica | Letourneux & Bourguignat, 1887 | 1800's | Enfidaville, Tunisia | Extinct | Access | |
| Bythinella whiteleggei | Brazier in Etheridge, 1889 | ? | Lord Howe Island, New South Wales, Australia | Missing | Access | |
| Bythiospeum dubium | Access | |||||
| Bythiospeum gonostoma | Access | |||||
| Bythiospeum putei putei | Access | |||||
| Bythiospeum putei roesleri | Access | |||||
| Bythiospeum turritum | Access |
Family: Annulariidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Parachondria basicarinata | Access |
Family: Assimineidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Conacmella vagans | Hirase, 1907 | - | - | Ogasawara Islands, Japan | Rediscovered | Access |
| Cyclomorpha secessa | Access | |||||
| Electrina succinea orites | Access | |||||
| Electrina succinea succinea | Access | |||||
| Fijianella sp. nov. 'Rotuma' | Access | |||||
| Garrettia rotella | Access | |||||
| Kubaryia pilikia | Access | |||||
| Omphalotropis bassinblancensis | Access | |||||
| Omphalotropis caldwelli | Access | |||||
| Omphalotropis dupontiana | Access | |||||
| Omphalotropis ingens | Access | |||||
| Omphalotropis margarita | Access | |||||
| Omphalotropis maxima | Access | |||||
| Omphalotropis multilirata | Access | |||||
Omphalotropis plicosa | Pfeiffer, 1852 | - | - | Mauritius | Rediscovered | Access |
| Omphalotropis quittorensis | Access | |||||
| Omphalotropis rotumana | Access | |||||
| Omphalotropis vacoasensis | Access | |||||
| Omphalotropis sp. nov. 'Mauritius' | Access | |||||
| Omphalotropis sp. nov. 'Rotuma' | Access | |||||
| Paludinella miyakoinsularis | Access | |||||
| Pseudogibbula cara | Access | |||||
| Valvatorbis mauritii | Access |
Family: Bithyniidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Gabbiella barthi | Access | |||||
| Gabbiella matadina | Access | |||||
| Soapitia dageti | Access |
Family: Borsoniidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Belaturricula gaini | Lamy, 1910 | - | - | Antarctica | Rediscovered | Access |
Family: Cancellariidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cancellaria corrosa | Reeve, 1856 | - | - | Central America (western) | Rediscovered | Access |
Family: Cochliopidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Coahuilix parrasense | Access | |||||
| Cochliopa rowelli | Access | |||||
| Dyris amazonicus | Access | |||||
| Heleobia achaja sorella | Westerlund, 1879 | pre-2000 | Velestino, Greece | Missing | Access | |
Heleobia peiranoi | Access | |||||
| Heleobia spinellii | Access | |||||
| Heleobia steindachneri | Access | |||||
| Heleobia sublineata | Access | |||||
| Juturnia brunei | Taylor, 1987 | Brune spring snail, Brune's tryonia | 1993 | Phantom Lake, Texas, USA | Missing | Access |
| Paludiscala thompsoni | Access | |||||
| Sioliella effusa | Access | |||||
| Zetekina panamensis | Access |
Family: Conidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Conasprella sauros | Access | |||||
| Conus bellulus | Access | |||||
| Conus colmani | Access |
Family: Cyclophoridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Awalycaeus yanoshokoae | Yano & Matsuda, 2016 | - | Shikoku, Japan (western) | Rediscovered | Access | |
| Cyclophorus acutimarginatus | Access | |||||
| Cyclophorus horridulum | (Morelet, 1882) | - | - | Mayotte | Rediscovered | Access |
| Cyclophorus stenomphalus | Access | |||||
| Cyclosurus mariei | Morelet, 1881 | - | - | Mayotte | Rediscovered | Access |
| Madgeaconcha sevathiani | Access | |||||
| Myxostoma petiverianum | (Wood, 1828) | - | - | Hon Cau Island, Vietnam | Rediscovered | Access |
| Nobuea kurodai | Access |
Family: Diplommatinidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Diplommatina alata | Access | |||||
| Diplommatina aurea | Access | |||||
| Diplommatina gibboni | Access | |||||
| Opisthostoma decrespignyi | Access | |||||
| Opisthostoma otostoma | Access | |||||
Palaina albata | Access | |||||
| Palaina patula | Access | |||||
| Palaina platycheilus | Access | |||||
| Palaina pupa | Access | |||||
| Plectostoma charasense | Access | |||||
| Plectostoma dindingensis | Access | |||||
| Plectostoma sciaphilum | Access | |||||
| Plectostoma tenggekensis | Access | |||||
| Plectostoma turriforme | Access |
Family: Fasciolariidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Latirus vexillulum | (Reeve, 1842) | - | - | Caroline Island, Southern Line Islands, Kiribati | Rediscovered | Access |
Family: Hydrobiidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Alzoniella galaica | Access | |||||
| Antibaria notata | Access | |||||
| Austropyrgus dulvertonensis | Access | |||||
| Beddomeia tumida | Petterd, 1889 | 1920's | Great Lake, Tasmania, Australia | Rediscovered? | Access | |
| Belgrandia moitessieri | Access | |||||
| Belgrandia varica | Access | |||||
| Belgrandiella boetersi | Access | |||||
| Belgrandiella cavernica | Access | |||||
| Belgrandiella intermedia | Access | |||||
| Belgrandiella kreisslorum | Access | |||||
| Belgrandiella multiformis | Access | |||||
| Bythiospeum pfeifferi | (Clessin, 1890) | - | - | Austria | Missing | Access |
| Dianella schlickumi | Schütt, 1962 | - | Lake Amvrakia, Greece | Rediscovered | Access | |
| Falsipyrgula beysehirana | (Schütt, 1965) | 1990's | Lake Beyşehir, Turkey | Missing | Access | |
| Floridobia monroensis | Access | |||||
| Floridobia parva | Thompson, 1968 | Pygmy siltsnail | ? | USA | Missing | Access |
| Graecoanatolica brevis | Radoman, 1973 | pre-1973 | Pinar Gözü spring, Turkey | Missing | Access | |
| Graecoanatolica conica | Radoman, 1973 | 1973 | Turkey | Missing | Access | |
| Graecoanatolica macedonica | Access | |||||
| Graecoanatolica vegorriticola | Schütt, 1962 | - | - | Lake Petron and Lake Vegoritis, Greece | Rediscovered | Access |
| Graziana lacheineri adriolitoralis | Access | |||||
| Grossuana serbica vurliana | Access | |||||
| Hydrobia anatolica | Schütt, 1965 | pre-1994 | Düden waterfall, Antalya Province, Turkey | Missing | Access | |
| Hydrobia gracilis | Access | |||||
| Iglica gratulabunda | (A.J. Wagner, 1910) | ? | Austria | Missing | Access | |
| Islamia ateni | Access | |||||
| Islamia bendidis | Access | |||||
| Islamia graeca | Access | |||||
| Islamia hadei | Access | |||||
| Islamia pseudorientalica | Access | |||||
| Islamia trichoniana | Radoman, 1979 | - | Aghia Sophia & Lake Trichonis, Greece | Rediscovered | Access | |
| Islamia zermanica | Radoman, 1973 | - | Zrmanja River, Croatia | Rediscovered | Access | |
| Kirelia carinata | Access | |||||
| Littoridina gaudichaudii | Access | |||||
| Lyogyrus bakerianus | Access | |||||
| Marstonia castor | F.G. Thompson, 1977 | 1973? | Georgia, USA | Missing | Access | |
| Marstonia olivacea | Pilsbry, 1895 | Olive marstonia | 1940 | Alabama, USA | Extinct | Access |
| Marstonia ozarkensis | Access | |||||
| Mercuria punica | (Letourneux & Bourguignat, 1887) | ? | Kebili, Tunisia | Missing | Access | |
| Nanivitrea alcaldei | Access | |||||
| Nanivitrea helicoides | Access | |||||
| Neohoratia coronadoi | (Bourguignat, 1870) | ? | ? | Missing | Access | |
| Ohridohauffenia drimica | Access | |||||
| Ohridohauffenia minuta | Access | |||||
| Posticobia norfolkensis | (Sykes, 1900) | Norfolk (Island) Posticobia | 7 June 1913 | Norfolk Island, Australia (politically) | Extinct | Access |
| Pseudamnicola barratei | Letourneux & Bourguignat, 1887 | 1970's or before | Tunisia | Extinct | Access | |
| Pseudamnicola constantinae | (Letourneux, 1870) | pre-1871 | Algeria | Missing | Access | |
| Pseudamnicola depressispira | Access | |||||
| Pseudamnicola desertorum | Bourguignat, 1862 | pre-1863 | Algeria | Invalid (synonym) | Access | |
| Pseudamnicola doumeti | Letourneux & Bourguignat, 1887 | 1800's | Thala, Tunisia | Extinct | Access | |
| Pseudamnicola latasteana | Letourneux & Bourguignat, 1887 | 1800's | Oudref oasis, Tunisia | Extinct | Access | |
| Pseudamnicola letourneuxiana | Access | |||||
| Pseudamnicola macrostoma | Küster, 1853 | ? | Greece | Missing | Access | |
| Pseudamnicola oudrefica | Letourneux & Bourguignat, 1887 | 1800's | Oudref oasis, Tunisia | Extinct | Access | |
| Pseudamnicola ragia | Letourneux & Bourguignat, 1887 | 1800's | Kriz and Limaguess, Tunisia | Extinct | Access | |
| Pseudamnicola singularis | Letourneux & Bourguignat, 1887 | 1800's | Oudref and Oued Gabés, Tunisia | Extinct | Access | |
| Pseudoislamia balcanica | Radoman, 1979 | - | Greece (including Lake Trichonis) | Rediscovered | Access | |
| Pyrgulopsis brandi | Access | |||||
| Pyrgulopsis carinata | Hershler, 1998 | Carinate duckwater pyrg | - | Little Warm Spring, Duckwater Valley, Nye County, Nevada, USA | Rediscovered | Access |
| Pyrgulopsis chupaderae | Access | |||||
| Pyrgulopsis coloradensis | Hershler, 1998 | Blue Point pyrg | - | Blue Point Spring, Colorado River drainage, Clark County, Nevada, USA | Rediscovered | Access |
| Pyrgulopsis nevadensis | (Stearns, 1833) | Corded purg | ? | Nevada, USA | Extinct | Access |
| Pyrgulopsis patzcuarensis | Access | |||||
| Pyrgulopsis ruinosa | Hershler, 1998 | Fish Lake pyrg, Fish Lake Valley pyrg | pre-1994 | Spring southwest of The Crossing, Fish Lake Valley, Esmeralda County, Nevada | Missing | Access |
| Pyrgulopsis torrida | Hershler et al., 2016 | Little Sycamore pyrg | 2000 | Ventura County, California, USA | Missing | Access |
| Pyrgulopsis sp. nov. 'Nevada' | Access | |||||
| Sardohoratia sulcata | Access | |||||
| Somatogyrus alcoviensis | Krieger, 1972 | Reverse pebblesnail | - | Georgia, USA | Rediscovered | Access |
| Somatogyrus amnicoloides | Access | |||||
| Somatogyrus aureus | Access | |||||
| Somatogyrus biangulatus | Access | |||||
| Somatogyrus constrictus | Access | |||||
| Somatogyrus coosaensis | Access | |||||
| Somatogyrus crassilabris | Access | |||||
| Somatogyrus crassus | Access | |||||
| Somatogyrus currierianus | Access | |||||
| Somatogyrus decipiens | Access | |||||
| Somatogyrus excavatus | Access | |||||
| Somatogyrus georgianus | Access | |||||
| Somatogyrus hendersoni | Access | |||||
| Somatogyrus humerosus | Access | |||||
| Somatogyrus nanus | Access | |||||
| Somatogyrus obtusus | Access | |||||
| Somatogyrus pygmaeus | Access | |||||
| Somatogyrus quadratus | Access | |||||
| Somatogyrus sargenti | Access | |||||
| Somatogyrus strengi | Pilsbry & Walker, 1906 | Rolling pebblesnail | - | Alabama, USA | Rediscovered | Access |
| Somatogyrus substriatus | Access | |||||
| Somatogyrus wheeleri | Access | |||||
| Trichonia kephalovrissonia | Access | |||||
| Trichonia trichonica | Radoman, 1973 | - | Greece (including Lake Trichonis) | Rediscovered | Access | |
| Tryonia hertleini | (Drake, 1956) | pre-1995 | Las Palomas, Mexico (northeast) | Missing | Access | |
| Tryonia julimesensis | Access | |||||
| Tryonia oasiensis | Access | |||||
| Tryonia santarosae | Access | |||||
| Tryonia seemani | Frauenfeld, 1863 | - | - | Durango, Mexico | Rediscovered | Access |
| Tryonia shikueii | Access | |||||
| Turcorientalia hohenackeri hohenackeri | Küster, 1853 | 1985? | Greece | Missing | Access | |
| Vinodolia fiumana | Radoman, 1973 | - | - | Croatia | Rediscovered | Access |
| Vinodolia fluviatilis | Radoman, 1973 | - | - | Croatia | Rediscovered | Access |
| Vinodolia lacustris | Access | |||||
| Vinodolia matjasici | Access | |||||
| Zaumia sanctizaumi | Access |
Family: Lithoglyphidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Clappia cahabensis | Clench, 1965 | Cahaba pebblesnail | - | Cahaba River, Pipp County, Alabama, USA | Rediscovered | Access |
| Clappia umbilicata | Access | |||||
| Fluminicola minutissimus | Pilsbry, 1907 | Pixie pepplesnail | pre-1908 | lower Snake River basin, Price Valley, Weiser Canyon, Washington County, Idaho, USA | Missing | Access |
| Fluminicola nuttallianus | (Lea, 1838) | Dusky pepplesnail | (dead shells) | Willamette River, Oregon, USA | Missing | Access |
| Tanousia zrmanjae | (Brusina, 1866) | - | Zrmanja River, Croatia | Rediscovered | Access |
Family: Littorinidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Littoraria flammea | Philippi, 1847 | Flamed periwinkle | - | Shangai, China | Rediscovered | Access |
Family: Marginellidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Marginella reeveana | Petit, 1851 | - | - | Ghana | Rediscovered | Access |
Family: Megalomastomatidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Naggsiaconcha mauritianus | Access |
Family: Melanopsidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
Melanopsis germaini | Access | |||||
| Melanopsis infracincta | Access | |||||
| Melanopsis khabourensis | Access | |||||
| Melanopsis pachya | Access |
Family: Moitessieriidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
Henrigirardia wienini | (Girardi, 2001) | (empty shells) | a cave in Hérault valley, France (southern) | Missing | Access | |
| Paladilhiopsis janinensis | Access | |||||
| Spiralix corsica | Bernasconi, 1994 | 1990's | Corsica, France | Missing | Access |
Family: Neocyclotidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Amphicyclotulus guadeloupensis | Access | |||||
| Incerticyclus cinereus | Access |
Family: Ovulidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Primovula heleneae | Cate, 1973 | - | - | South Australia, Australia | Rediscovered | Access |
Family: Pachychilidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pachychilus saussurei | Access | |||||
| Potadoma kadeii | Access | |||||
| Sulcospira martini | Access | |||||
| Sulcospira pisum | Access | |||||
| Sulcospira sulcospira | Access |
Family: Pleuroceridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Athearnia anthonyi | Access | |||||
| Elimia brevis | Access | |||||
| Elimia clausa | Access | |||||
| Elimia comalensis | Access | |||||
| Elimia fusiformis | Access | |||||
| Elimia gibbera | Access | |||||
| Elimia hartmaniana | Access | |||||
| Elimia impressa | Access | |||||
| Elimia jonesi | Access | |||||
| Elimia lachryma | Reeve, 1861 | Teardrop elimia, Nodulose Coosa River snail | - | Alabama, USA | Rediscovered | Access |
| Elimia laeta | Access | |||||
| Elimia macglameriana | Access | |||||
| Elimia melanoides | (Conrad, 1834) | Black mudalia | - | Alabama, USA | Rediscovered | Access |
| Elimia pilsbryi | Access | |||||
| Elimia pupaeformis | Access | |||||
| Elimia pupoidea | Access | |||||
| Elimia pygmaea | Access | |||||
| Elimia timida timida | Access | |||||
| Elimia troostiana | Lea, 1838 | Mossy elimia | - | Tennessee, USA | Rediscovered | Access |
| Elimia vanuxemiana | I. Lea, 1843 | Cobble elimia | - | Alabama, USA | Rediscovered | Access |
†Gyrotoma excisa | Access | |||||
| †Gyrotoma lewisii | Access | |||||
| †Gyrotoma pagoda | Access | |||||
| †Gyrotoma pumila | Access | |||||
| †Gyrotoma pyramidata | Access | |||||
| †Gyrotoma walkeri | Access | |||||
| Leptoxis clipeata | Access | |||||
| Leptoxis compacta | Anthony, 1854 | Oblong rocksnail | - | Cahaba River, central Alabama, USA | Rediscovered | Access |
| Leptoxis crassa | Access | |||||
| Leptoxis foremanii | I. Lea, 1843 | Interrupted rocksnail, Georgia rocksnail | - | Alabama, USA | Rediscovered | Access |
| Leptoxis formosa | Access | |||||
Leptoxis ligata | Access | |||||
| Leptoxis lirata | Access | |||||
| Leptoxis melanoides | Access | |||||
| Leptoxis minor | Access | |||||
| Leptoxis occultata | Access | |||||
| Leptoxis showalterii | Access | |||||
| Leptoxis torrefacta | Access | |||||
| Leptoxis trilineata | Access | |||||
| Leptoxis vittata | Access | |||||
| Lithasia duttoniana | I. Lea, 1841 | Dutton's river snail, Helmet rocksnail | - | USA | Rediscovered | Access |
| Lithasia hubrichti | Access | |||||
| Lithasia jayana | Access |
Family: Pomatiidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Tropidophora bewsheri | Access | |||||
| Tropidophora bipartita | Access | |||||
| Tropidophora carinata | Access | |||||
| Tropidophora deflorata | Access | |||||
| Tropidophora desmazuresi | Access | |||||
| Tropidophora icterica | Access | |||||
| Tropidophora lienardi | Access | |||||
| Tropidophora mauritiana | Access | |||||
| Tropidophora scabra | Access | |||||
| Tropidophora semilirata | (Morelet, 1881) | - | - | Mayotte, Comoros Islands | Rediscovered | Access |
| Tropidophora vincentflorensi | Access |
Family: Pomatiopsidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Pomatiopsis hinkleyi | Access | |||||
| Tomichia cawstoni | Access |
Family: Potamididae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Cerithidea fuscata | Access |
Family: Rissoidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Rissoa galvagni | Aradas & Maggiore, 1844 | - | - | Mediterranean | Rediscovered | Access |
Family: Tateidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Kuschelita inflata | Climo, 1974 | 1972 | Ministry of Works and Development bore, Roy(')s Hill, west of Hastings/near Napier, North Island, New Zealand | Missing | Access | |
| Leiorhagium solemi | Haase & Bouchet, 1998 | 1928 | New Caledonia | Extinct | Access | |
| Potamolithus concordianus | ||||||
| Potamopyrgus acus | Haase, 2008 | 1981 | Limestone Downs Station, Waikato, North Island, New Zealand | Missing | Access |
Family: Thiaridae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Aylacostoma stigmaticum | Access | |||||
| Melanoides agglutinans | Access |
Family: Vermetidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Dendropoma gaederopi | Mörch, 1861 | - | - | Mediterranean Sea | Rediscovered | Access |
Family: Viviparidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Bellamya phthinotropis | Access | |||||
| Notopala sublineata hanleyi | Frauenfeld, 1864 | River snail, Blind river snail | - | Murray and Murrumbidgee drainages, South Australia | Rediscovered | Access |
| Tchangmargarya yangtsunghaiensis | (Tschang & Tsi, 1949) | - | - | Lake Yangtsunghai, Yunnan Province, China | Rediscovered | Access |
| Tulotoma magnifica | Conrad, 1834 | Alabama live-bearing snail, tulotoma | - | Coosa-Alabama River System, USA | Rediscovered | Access |
| Viviparus bermondianus | Access |
Family: Rissoidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Rissoa galvagni | Aradas & Maggiore, 1844 | - | - | Mediterranean | Rediscovered | Access |