- uaca, Turbonilla uaca A. Pimenta & R.S. Absalão, 2004 - (PYRAMIDELLIDAE)
- Uafatua, Subgenus Philonesia (Uafatua) F.C. Baker, 1949 (EUCONULIDAE)
- uahukaensis, Oscilla uahukaensis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- uahukana, Atea uahukana H.A. Pilsbry & C.M. Cooke, 1933 - (ACHATINELLIDAE)
- ualanensis, Neritina ualanensis R.P. Lesson, 1831 - syn of: Clithon oualaniensis (R.P. Lesson, 1831) - (NERITIDAE)
- ualapuensis, Newcombia cinnamomea ualapuensis H.A. Pilsbry & C.M. Cooke, 1912 - (ACHATINELLIDAE)
- uandiensis, Crassostrea uandiensis (Lautenschläger, 1964 †) - (OSTREIDAE) (FOSSIL)
- uandiensis, Neogenella uandiensis Lautenschläger, 1990 † - (VENERIDA (UNASSIGNED)) (FOSSIL)
- uandiensis, Pitar uandiensis Lautenschläger, 1990 † - syn of: Neogenella uandiensis Lautenschläger, 1990 † - (VENERIDAE) (FOSSIL)
- Uanuka, Subgenus Mendana (Uanuka) F.C. Baker, 1938 (EUCONULIDAE)
- Uapuneutra, Subgenus Hiona (Uapuneutra) F.C. Baker, 1940 (EUCONULIDAE)
- uataderensis, Deroceras uataderensis (H.R. Simroth, 1904) - (AGRIOLIMACIDAE)
- uawa, Jupiteria uawa J. Marwick, 1931 † - (NUCULANIDAE) (FOSSIL)
- ubaghsi, Sphenodiscus ubaghsi de Groussouvre, 1894 † - (SPHENODISCIDAE) (FOSSIL)
- ubajarensis, Tomigerus ubajarensis (J.L.M. Leme, 1980) - (ODONTOSTOMIDAE)
- ubalaense, Leptoceras ubalaense F. Haas, 1960 † - (PROTANCYLOCERATIDAE) (FOSSIL)
- ubalaensis, Pseudoosterella ubalaensis F. Haas, 1960 † - (OOSTERELLIDAE) (FOSSIL)
- ubaquense, Pedioceras ubaquense D.L.G. Karsten, 1858 † - syn of: Pedioceras caquesense (D.L.G. Karsten, 1858 †) - (ANCYLOCERATIDAE) (FOSSIL)
- ubaquensis, Ammonites ubaquensis D.L.G. Karsten, 1858 † - syn of: Pedioceras caquesense (D.L.G. Karsten, 1858 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- ubaquensis, Lymnaea ubaquensis J. Piaget, 1914 - syn of: Galba cousini (F.P. Jousseaume, 1887) - (LYMNAEIDAE)
- uber, Polinices uber (A. Valenciennes, 1832) - (NATICIDAE)
- uber, Natica uber A. Valenciennes, 1832 - syn of: Polinices uber (A. Valenciennes, 1832) - (NATICIDAE)
- Uberella, Genus Uberella H.J. Finlay, 1928 (NATICIDAE)
- UberHumphrey, syn of: Genus Polinices P.D. Montfort, 1810 (NATICIDAE)
- uberiformis, Streptaxis uberiformis L. Pfeiffer, 1848 - (STREPTAXIDAE)
- uberinus, Polinices uberinus (A.V.M.D. D'Orbigny, 1842) - (NATICIDAE)
- uberta, Orobophana uberta (A.A. Gould, 1847) - (HELICINIDAE)
- uberta, Cernuella uberta É.A.A. Locard, 1899 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- uberta, Mirilentia uberta Ruzhentsev & Bogoslovskaya, 1971 † - (NEOGLYPHIOCERATIDAE) (FOSSIL)
- uberta borealis, Orobophana uberta borealis M.C. Neal, 1934 - (HELICINIDAE)
- uberta bryani, Orobophana uberta bryani M.C. Neal, 1934 - (HELICINIDAE)
- uberta exanima, Orobophana uberta exanima M.C. Neal, 1934 - (HELICINIDAE)
- uberta hibrida, Orobophana uberta hibrida M.C. Neal, 1934 - (HELICINIDAE)
- uberta lymaniana, Orobophana uberta lymaniana H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- uberta magdalenae, Orobophana uberta magdalenae (C.M.F. Ancey, 1890) - (HELICINIDAE)
- uberta makuaensis, Orobophana uberta makuaensis M.C. Neal, 1934 - (HELICINIDAE)
- uberta nuuanuensis, Orobophana uberta nuuanuensis H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- uberta percitrea, Orobophana uberta percitrea M.C. Neal, 1934 - (HELICINIDAE)
- uberta subtenuis, Orobophana uberta subtenuis M.C. Neal, 1934 - (HELICINIDAE)
- uberta wilderi, Orobophana uberta wilderi M.C. Neal, 1934 - (HELICINIDAE)
- Ubiquitarion, Genus Ubiquitarion Hyman, Lamborena & Köhler, 2017 (HELICARIONIDAE)
- ubiquitosus, Scaphites warreni ubiquitosus Cobban, 1951 † - (SCAPHITIDAE) (FOSSIL)
- ubitaensis, Gibberula ubitaensis J. Espinosa & J.A. Ortea, 2000 - (CYSTISCIDAE)
- ubitalta, Gibberula ubitalta T. McCleery, 2009 - (CYSTISCIDAE)
- Ubites, Genus Ubites Korn & Sudar, 2010 † (ENTOGONITIDAE) (FOSSIL)
- ubuhle, Eucithara ubuhle R.N. Kilburn, 1992 - (MANGELIIDAE)
- ubwamensis, Paryphantopsis ubwamensis J. Slapcinsky, 2005 - (CHAROPIDAE)
- ucayalensis, Bulimulus ucayalensis J.C.H. Crosse, 1871 - (BULIMULIDAE)
- ucayalensis, Helicina laus ucayalensis A.J. Wagner, 1911 - (HELICINIDAE)
- ucayalensis, Anodonta ucayalensis R.A. Philippi, 1869 - syn of: Anodontites trigona (J.B. von Spix & J.A. Wagner, 1827) - (UNIONIDAE)
- ucetiae, Ammonitoceras ucetiae Dumas, 1876 † - (ANCYLOCERATIDAE) (FOSSIL)
- ucetiaensis, Islamia ucetiaensis H. Girardi & H.D. Boeters, 2015 - (HYDROBIIDAE)
- uchauxensis, Plagioptychus uchauxensis Mennessier 1957 † - (PLAGIOPTYCHIDAE) (FOSSIL)
- Uchauxia, Subgenus Cerithium (Uchauxia) Cossman, 1906 † (CERITHIIDAE) (FOSSIL)
- ucheensis, Goniobasis ucheensis I. Lea, 1862 - (PLEUROCERIDAE)
- uchhaliensis, Phymatopleura uchhaliensis Reed, 1944 † - (PHYMATOPLEURIDAE) (FOSSIL)
- uchidai, Keenocardium uchidai T. Habe, 1955 - syn of: Keenocardium californiense (G.P. Deshayes, 1839) - (CARDIIDAE)
- uchidai, Lacuna uchidai (T. Habe, 1953) - (LITTORINIDAE)
- uchidai, Obesotoma uchidai T. Habe, 1958 - (MANGELIIDAE)
- uchidai, Acanthodoris uchidai K. Baba, 1935 - (ONCHIDORIDIDAE)
- uchidai, Marsenina uchidai (T. Habe, 1958) - (VELUTINIDAE)
- uchidana, Crassatella uchidana M. Yokoyama, 1926 † - syn of: Indocrassatella oblongata uchidana (M. Yokoyama, 1926 †) - (CRASSATELLIDAE) (FOSSIL)
- uchidana, Indocrassatella oblongata uchidana (M. Yokoyama, 1926 †) - (CRASSATELLIDAE) (FOSSIL)
- uchimae, Cosa uchimae I. Hayami & T. Kase, 1993 - (PHILOBRYIDAE)
- uchimuraensis, Vesicomya uchimuraensis J.T. Kuroda, 1931 - (VESICOMYIDAE)
- uchiyamai, Morum uchiyamai J.T. Kuroda & T. Habe, 1961 - (HARPIDAE)
- uchtense, Ukhtoceras uchtense (Holzapfel, 1899 †) - (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- uchtense, Ponticeras uchtense (Keyserling, 1844 †) - (PONTICERATIDAE) (FOSSIL)
- uchtensis, Goniatites uchtensis Keyserling, 1844 † - syn of: Ponticeras uchtense (Keyserling, 1844 †) - (GONIATITIDAE) (FOSSIL)
- uchtensis, Hoeninghausia uchtensis Ljaschenko, 1956 † - (KOENENITIDAE) (FOSSIL)
- Uchtites, Genus Uchtites Bogoslovsky , 1958 † (PONTICERATIDAE) (FOSSIL)
- uchurica, Aldanella uchurica Shaler & Foerste, 1888 † - syn of: Aldanella attleborensis (Shaler & Foerste, 1888 †) - (ALDANELLIDAE) (FOSSIL)
- ucrainica, Microcolpia ucrainica Y.I. Starobogatov, T.L. Alexenko & R.E. Levina, 1992 - (MELANOPSIDAE)
- ucrainica, Paramonopleura ucrainica I.A. Korobkov & Makarenko, 1968 † - (MONOPLEURIDAE) (FOSSIL)
- ucrainicus, Acroloxus ucrainicus Gozhik & Prysjazhnjuk, 1978 † - (ACROLOXIDAE) (FOSSIL)
- ucrainicus, Viviparus ucrainicus Gozhik in Gozhik & Prysjazhnjuk, 1978 † - (VIVIPARIDAE) (FOSSIL)
- UCUMARIIDAE Sánchez, 2003 † - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-ANOMALODESMATA [Order]-PHOLADOMYOIDEA [Superfamily]) (FOSSIL)
- Ucumaris, Genus Ucumaris Sanchez & Vaccari, 2003 † (UCUMARIIDAE) (FOSSIL)
- Ucumaropsis, Genus Ucumaropsis Sánchez, 2005 † (UCUMARIIDAE) (FOSSIL)
- ucuttana, Globivenus ucuttana (W.H. Dall, 1903 †) - (VENERIDAE) (FOSSIL)
- uda, Alderia uda (Er. Marcus & Ev. Marcus, 1956) - (LIMAPONTIIDAE)
- uddeni, Submortoniceras uddeni A.T. Young, 1963 † - (COLLIGNONICERATIDAE) (FOSSIL)
- uddeni, Timorites uddeni Miller & Furnish, 1940 † - (CYCLOLOBIDAE) (FOSSIL)
- uddeni, Engonoceras uddeni Cragin, 1900 † - syn of: Engonoceras belviderense Cragin, 1894 † - (ENGONOCERATIDAE) (FOSSIL)
- uddeni, Stoliczkaia uddeni Böse, 1928 † - syn of: Lamnayella texana (Cragin, 1893 †) - (LYELLICERATIDAE) (FOSSIL)
- uddeni, Cibolites uddeni Plummer & P.H. Scott, 1937 † - (PARACELTITIDAE) (FOSSIL)
- uddeni, Vidrioceras uddeni Böse, 1919 † - (VIDRIOCERATIDAE) (FOSSIL)
- Uddenia, Genus Uddenia Stephenson, 1941 † (CRASSATELLIDAE) (FOSSIL)
- Uddenites, Genus Uddenites Böse , 1919 † (MEDLICOTTIIDAE) (FOSSIL)
- Uddenoceras, Genus Uddenoceras Miller & Furnish, 1954 † (PROLECANITIDA (UNASSIGNED)) (FOSSIL)
- uddevalensis, Mya uddevalensis A. Hancock, 1846 - syn of: Mya truncata C. Linnaeus, 1758 - (MYIDAE)
- Udosarx, Genus Udosarx G.R. Webb, 1954 (ARIOLIMACIDAE)
- udylensis, Inoceramus udylensis Zonova, 1989 † - (INOCERAMIDAE) (FOSSIL)
- Udzhella, Genus Udzhella Vassiljeva, 1990 † (TRENELLIDAE) (FOSSIL)
- udzungwensis, Gulella udzungwensis A.C. van Bruggen, 2007 - (STREPTAXIDAE)
- Ueckerconulus, Genus Ueckerconulus Gründel , 2000 † (TROCHIDAE) (FOSSIL)
- Ueckeritzella, Genus Ueckeritzella Gründel, 1998 † (APORRHAIDAE) (FOSSIL)
- ueckeritzensis, Pommerozygia ueckeritzensis Grundel, 1998 † - (POMMEROZYGIIDAE) (FOSSIL)
- uedai, Arca uedai T. Matsubara, 2002 † - (ARCIDAE) (FOSSIL)
- uedai, Pseudopermorphus uedai Nakazawa & Newell 1968 † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- uedai, Euomphalus uedai Murata, 1969 † - (EUOMPHALIDAE) (FOSSIL)
- uedai, Pseudopermophorus uedai Nakazawa & Newell, 1968 † - (KALENTERIDAE) (FOSSIL)
- uejii, Pisidium uejii A. Mori, 1938 - (SPHAERIIDAE)
- uenoi, Akiyoshia uenoi J.T. Kuroda & T. Habe, 1954 - (HYDROBIIDAE)
- uenoi, Pisidium uenoi A. Mori, 1938 - syn of: Pisidium lilljeborgi S. Clessin, 1886 - (SPHAERIIDAE)
- uermoesense, Paradasyceras uermoesense (Herbich, 1878 †) - (JURAPHYLLITIDAE) (FOSSIL)
- uespi, Turbonilla uespi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- uetanii, Azorinus uetanii (Y. Otuka, 1938 †) - (SOLECURTIDAE) (FOSSIL)
- uetanii, Zozia uetanii Y. Otuka, 1938 † - syn of: Azorinus uetanii (Y. Otuka, 1938 †) - (SOLECURTIDAE) (FOSSIL)
- ufjalvianus, Laevozebrinus ufjalvianus (C.M.F. Ancey, 1886) - (ENIDAE)
- ufrensis, Purpuroidea ufrensis Korotkov, 1972 † - (PURPUROIDEIDAE) (FOSSIL)
- ugaliensis, Turris ugaliensis J. Makiyama, 1927 - (TURRIDAE)
- Ugama, Subgenus Archaica (Ugama) A.A. Schileyko, 1978 (HYGROMIIDAE)
- ugandae, Conulinus ugandae E.C. Von Martens - (CERASTUIDAE)
- ugandae, Bulinus ugandae G. Mandahl-Barth, 1954 - (PLANORBIDAE)
- ugandae, Eupala unicolor ugandae G. Mandahl-Barth, 1954 - (VIVIPARIDAE)
- ugandae costatus, Conulinus ugandae costatus B. Verdcourt, 1985 - (CERASTUIDAE)
- ugandanum, Punctum ugandanum (E.A. Smith, 1903) - (PUNCTIDAE)
- ugandanus, Nothapalus ugandanus M. Connolly, 1923 - (SUBULINIDAE)
- ugandensis, Molarella ugandensis (E.A. Smith, 1901) - (STREPTAXIDAE)
- Ugartea, Subgenus Tropeas (Ugartea) P. Bartsch, 1917 (PYRAMIDELLIDAE)
- ugdulenai, Leptaleoceras ugdulenai (C. Gemmellaro, 1885 †) - (HILDOCERATIDAE) (FOSSIL)
- ugesae, Setia ugesae A. Verduin, 1988 - (RISSOIDAE)
- ugoensis, Mirus japonicus ugoensis H.A. Pilsbry & Y. Hirase, 1908 - (ENIDAE)
- ugolinii, Pecten ugolinii Déperet & Roam, 1910 † - (PECTINIDAE) (FOSSIL)
- ugolnensis, Corbicula ugolnensis Volobueva, 1981 † - syn of: Cyrenobatissa sunagawaensis T. Nagao & Otatume, 1943 † - (CYRENIDAE) (FOSSIL)
- ugolnensis, Arenomya ugolnensis Devjatilova & Volobueva, 1981 † - (MYIDAE) (FOSSIL)
- ugolnensis, Costacallista ugolnensis Devjatilova, 1981 † - (VENERIDAE) (FOSSIL)
- Ugooloceras, Genus Ugooloceras Evans , 1996 † (GEISONOCERATIDAE) (FOSSIL)
- ugra, Aegeiceras ugra (Diener, 1895 †) - (GYMNITIDAE) (FOSSIL)
- uhareensis, Unio uhareensis I. Lea, 1868 - syn of: Unio abbevillensis I. Lea, 1857 - (UNIONIDAE)
- uhdeanus, Mesembrinus uhdeanus E.C. Von Martens, 1864 - (BULIMULIDAE)
- uhdeanus, Orthalicus uhdeanus E.C. Von Martens, 1893 - (ORTHALICIDAE)
- uhdeanus borealis, Mesembrinus uhdeanus borealis E.C. Von Martens, 1893 - (BULIMULIDAE)
- uhdeanus cuernovacensis, Mesembrinus uhdeanus cuernovacensis J.C.H. Crosse & P.H. Fischer, 1874 - (BULIMULIDAE)
- uhdeanus tepeccensis, Mesembrinus uhdeanus tepeccensis E.C. Von Martens, 1893 - syn of: Mesembrinus uhdeanus tepicensis E.C. Von Martens, 1893 - (BULIMULIDAE)
- uhdeanus tepicensis, Mesembrinus uhdeanus tepicensis E.C. Von Martens, 1893 - (BULIMULIDAE)
- uhleri, Lucina uhleri Clark, 1895 † - syn of: Myrtea curta † - (LUCINIDAE) (FOSSIL)
- uhli, Afer uhli F. Traub, 1979 † - (BUCCINIDAE) (FOSSIL)
- Uhligella, Genus Uhligella Jacob, 1908 † (DESMOCERATIDAE) (FOSSIL)
- uhligi, Eoheteroceras uhligi (Vasicek, 1981 †) - (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- uhligi, Anahamulina uhligi Vasicek, Skupien & Sulgan, 2004 † - (ANAHAMULINIDAE) (FOSSIL)
- uhligi, Acrioceras uhligi Sarkar, 1955 † - (ANCYLOCERATIDAE) (FOSSIL)
- uhligi, Auritina aurita uhligi Egoian, 1989 † - (ANCYLOCERATIDAE) (FOSSIL)
- uhligi, Barbatia uhligi Boehm, 1881 † - (ARCIDAE) (FOSSIL)
- uhligi, Naticopsis uhligi E.A.L. Kittl, 1892 † - syn of: Pachyomphalus uhligi (E.A.L. Kittl, 1892 †) - (DELPHINULOPSIDAE) (FOSSIL)
- uhligi, Nolaniceras uhligi Anthula, 1899 † - (DESHAYESITIDAE) (FOSSIL)
- uhligi, Gonioclymenia uhligi Frech, 1897 † - (GONIOCLYMENIIDAE) (FOSSIL)
- uhligi, Heteroceras uhligi Vasicek, 1981 † - syn of: Eoheteroceras uhligi (Vasicek, 1981 †) - (HETEROCERATIDAE) (FOSSIL)
- uhligi, Semenovites uhligi (Semenov, 1889 †) - (HOPLITIDAE) (FOSSIL)
- uhligi, Knemiceras uhligi (Choffat, 1886 †) - (KNEMICERATIDAE) (FOSSIL)
- uhligi, Mesohibolithes uhligi (Shvetsov, 1913 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- uhligi, Substeueroceras uhligi Helmstaedt, 1969 † - (NEOCOMITIDAE) (FOSSIL)
- uhligi, Goniomya uhligi Holdhaus, 1913 † - syn of: Undulomya singaporensis (R.B. Newton, 1906 †) - (PHOLADOMYIDAE) (FOSSIL)
- uhligi, Thisbites uhligi Mojsisovics, 1893 † - (THISBITIDAE) (FOSSIL)
- uhligi, Pachyomphalus uhligi (E.A.L. Kittl, 1892 †) - (TRICOLNATICOPSIDAE) (FOSSIL)
- uhligi multituberculatum, Acrioceras uhligi multituberculatum Thomel & al., 1990 † - (ANCYLOCERATIDAE) (FOSSIL)
- Uhligia, Genus Uhligia Horak, 1990 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- uhligii, Hoplites uhligii Weerth, 1884 † - (HOPLITIDAE) (FOSSIL)
- Uhligites, Genus Uhligites Kilian , 1913 † (OPPELIIDAE) (FOSSIL)
- uinta, Oreohelix uinta J. Brookes, 1939 - (OREOHELICIDAE)
- uintaense, Sphaerium uintaense R.E. Call, 1886 - syn of: Sphaerium nitidum S. Clessin, 1976 - (SPHAERIIDAE)
- uintahensis, Pronoella uintahensis Imlay, 1964 † - (ARCTICIDAE) (FOSSIL)
- uintensis, Scaphites uintensis Cobban, 1951 † - (SCAPHITIDAE) (FOSSIL)
- uirapa, Cornisepta uirapa L.R.L. Simone & C.M. Cunha, 2014 - (FISSURELLIDAE)
- uiratamensis, Hydrobia uiratamensis C.M. Kolesnikov, 1935 † - (HYDROBIIDAE) (FOSSIL)
- ujfalvyanus, Buliminus ujfalvyanus C.M.F. Ancey, 1886 - (ENIDAE)
- ujiensis, Euhadra tokarainsula ujiensis K. Tomiyama, 1984 - (BRADYBAENIDAE)
- ujiguntoensis, Megalophaedusa ujiguntoensis H. Minato, 1982 - (CLAUSILIIDAE)
- ujiinsularis, Diplommatina ujiinsularis H. Minato, 1982 - (DIPLOMMATINIDAE)
- ujijiensis, Nyassunio ujijiensis (J.C.H. Crosse, 1881) - (UNIONIDAE)
- ujratamica, Barnea ujratamica Andrussow † - (PHOLADIDAE) (FOSSIL)
- uka, Fluviopupa uka S. Zielske & M. Haase, 2014 - (HYDROBIIDAE)
- ukadoi, Hydrobia ukadoi Unknown - (HYDROBIIDAE)
- ukaguruense, Pseudopeas ukaguruense B. Verdcourt, 1996 - (SUBULINIDAE)
- ukalundensis, Kitikamispira ukalundensis Cook, 1995 † - (EUOMPHALOIDEA (UNASSIGNED)) (FOSSIL)
- ukense, Camereiceras ukense (Dimitrova, 1967 †) - (HEMIHOPLITIDAE) (FOSSIL)
- Ukhtoceras, Genus Ukhtoceras Zhuravleva, 1972 † (DISCOSORIDA (UNASSIGNED)) (FOSSIL)
- ukika, Lepsiella ukika Gordillo & C. Nielsen, 2013 † - (MURICIDAE) (FOSSIL)
- ukrainae, Tomyris ukrainae Michailovski, 1912 † - (TURRITELLIDAE) (FOSSIL)
- ukrainica, Euxinipyrgula ukrainica (T.L. Alexenko & Y.I. Starobogatov, 1987) - (HYDROBIIDAE)
- ukrainica, Omphiscola ukrainica Kovalenko, 2004 † - (LYMNAEIDAE) (FOSSIL)
- ukrainica, Strobilops ukrainica Steklov, 1966 † - (STROBILOPSIDAE) (FOSSIL)
- ukrainicus, Syngastrioceras ukrainicus Librovitch, 1939 † - (GLAPHYRITIDAE) (FOSSIL)
- Ukrainites, Genus Ukrainites Lyashenko, 1969 † (TENTACULITIDAE) (FOSSIL)
- ukulele, Atys ukulele C.C. Too, C.H. Carlson, P.J. Hoff & M.A.E. Malaquias, 2014 - (HAMINOEIDAE)
- ukuminxa, Agladrillia ukuminxa R.N. Kilburn, 1988 - (DRILLIIDAE)
- ula, Globidrillia ula W.P. Woodring, 1928 † - (DRILLIIDAE) (FOSSIL)
- ula, Propebela ula R.B. Watson, 1881 - syn of: Asperdaphne ula (R.B. Watson, 1881) - (MANGELIIDAE)
- ula, Asperdaphne ula (R.B. Watson, 1881) - (RAPHITOMIDAE)
- ulaganica, Lymnaea ulaganica N.D. Kruglov & Y.I. Starobogatov, 1983 - (LYMNAEIDAE)
- ulala, Fusimitra ulala E.F. Garcia, 2011 - (MITRIDAE)
- ulemensis, Palaeomutela ulemensis Gusev † - (PALAEOMUTELIDAE) (FOSSIL)
- Ulfa, Genus Ulfa Dall & Bartsch, 1904 † (OPISTHOBRANCHIA (UNASSIGNED)) (FOSSIL)
- ulicis, Helix ulicis W. Kobelt, 1904 - syn of: Ambigua fuscolabiata saprensis (W. Kobelt, 1904) - (HELICIDAE)
- ulidiae, Doris ulidiae W. Thompson, 1845 - syn of: Onchidoris muricata (O.F. Müller, 1776) - (DORIDIDAE)
- ulidiana, Doris ulidiana W. Thompson, 1845 - syn of: Onchidoris muricata (O.F. Müller, 1776) - (DORIDIDAE)
- ulidiana, Pleurotoma ulidiana W. Thompson, 1845 - syn of: Propebela rufa (G. Montagu, 1803) - (TURRIDAE)
- uliginosus, Eumecostylus uliginosus (W. Kobelt, 1891) - (BOTHRIEMBRYONTIDAE)
- uliginosus, Menetus uliginosus (E.G. Vanatta, 1910) - (PLANORBIDAE)
- ulinganensis, Zafra ulinganensis W.J. Sleurs, 1987 - (COLUMBELLIDAE)
- ulingensis, Ganesella ulingensis A. Zilch, 1966 - (CAMAENIDAE)
- ulixis, Xenocheilus ulixis Shimansky, 1957 † - (PSEUDONAUTILIDAE) (FOSSIL)
- ulla, Cylindrobulla ulla Er. Marcus & Ev. Marcus, 1970 - syn of: Ascobulla ulla (Er. Marcus & Ev. Marcus, 1970) - (CYLINDROBULLIDAE)
- ulla, Ascobulla ulla (Er. Marcus & Ev. Marcus, 1970) - (VOLVATELLIDAE)
- ullaensis, Bythinella ullaensis H.D. Boeters & G. Falkner, 2008 - (BYTHINELLIDAE)
- ullepitschi, Helix ullepitschi C.A. Westerlund, 1876 - syn of: Faustina illyrica (G. Stabile, 1864) - (HELICIDAE)
- ulloa, Turbonilla ulloa P. Bartsch, 1917 - (PYRAMIDELLIDAE)
- ulloa, Strioterebrum ulloa A.A. Olsson, 1932 † - (TEREBRIDAE) (FOSSIL)
- ulloana, Ividella ulloana (A.M. Strong, 1949) - (PYRAMIDELLIDAE)
- ulloana, Tellina ulloana L.G. Hertlein, 1968 - syn of: Tellina martinicensis D'Orbigny, 1853 - (TELLINIDAE)
- ulloana, Cyclinella ulloana L.G. Hertlein & A.M. Strong, 1948 - (VENERIDAE)
- ullungdoensis, Hemizaptyx stimpsoni ullungdoensis (O.K. Kwon & Y.C. Lee, 1991) - (CLAUSILIIDAE)
- ulmensis, Triptychia ulmensis (Sandberger, 1872) † - (FILHOLIIDAE) (FOSSIL)
- ulmus, Musculus ulmus T. Iredale, 1936 - syn of: Musculus cumingianus (L.A. Reeve, 1857) - (MYTILIDAE)
- Uloceras, Genus Uloceras Zhuravleva, 1974 † (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- ulocyma, Panchione ulocyma (W.H. Dall, 1895 †) - (VENERIDAE) (FOSSIL)
- Ulostoma, syn of: Genus Polygyra T. Say, 1818 (POLYGYRIDAE)
- Ulpia, Genus Ulpia P.H. Scott, 1955 (GASTROCOPTIDAE)
- ulrichi, Psilonychia ulrichi Isberg, 1934 † - (AMBONYCHIIDAE) (FOSSIL)
- ulrichi, Amphicoelia ulrichi C.J. Maynard, 1913 † - (AMBONYCHIIDAE) (FOSSIL)
- ulrichi, Nybyoceras ulrichi Foerste & Teichert, 1930 † - (ARMENOCERATIDAE) (FOSSIL)
- ulrichi, Bellerophon ulrichi Weller, 1906 † - (BELLEROPHONTIDAE) (FOSSIL)
- ulrichi, Heikea ulrichi Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- ulrichi, Alpenoceras ulrichi Foerste, 1927 † - (DISCOSORIDAE) (FOSSIL)
- ulrichi, Palaeoschisma ulrichi Endo, 1932 † - (EOTOMARIIDAE) (FOSSIL)
- ulrichi, Euciroa ulrichi C.A. Fleming, 1970 † - (EUCIROIDAE) (FOSSIL)
- ulrichi, Cataschisma ulrichi (Schuchert, 1900 †) - (GOSSELETINIDAE) (FOSSIL)
- ulrichi, Bactritimimus ulrichi Flower & W.J. Gordon, 1959 † - (HEMATITIDAE) (FOSSIL)
- ulrichi, Hercoglossa ulrichi White, 1882 † - (HERCOGLOSSIDAE) (FOSSIL)
- ulrichi, Lucina ulrichi G.F. Harris, 1897 † - syn of: Myrtea curta † - (LUCINIDAE) (FOSSIL)
- ulrichi, Lyelliceras ulrichi Knechtel, 1947 † - syn of: Prolyelliceras ulrichi (Knechtel, 1947 †) - (LYELLICERATIDAE) (FOSSIL)
- ulrichi, Maclurites ulrichi Kobayashi, 1933 † - syn of: Scaevogyra ulrichi (Kobayashi, 1933 †) - (MACLURITIDAE) (FOSSIL)
- ulrichi, Plethospira ulrichi Schuchert, 1900 † - (MURCHISONIIDAE) (FOSSIL)
- ulrichi, Scaevogyra ulrichi (Kobayashi, 1933 †) - (ONYCHOCHILIDAE) (FOSSIL)
- ulrichi, Vitrea ulrichi D.G. Georgiev & I. Dedov, 2014 - (PRISTILOMATIDAE)
- ulrichi, Prolyelliceras ulrichi (Knechtel, 1947 †) - (PROLYELLICERATIDAE) (FOSSIL)
- ulrichi, Schizodus ulrichi A.H. Worthen, 1890 † - (SCHIZODIDAE) (FOSSIL)
- ulrichi, Trigyra ulrichi W.J. Raymond, 1908 † - (SINUITIDAE) (FOSSIL)
- Ulrichoceras, Genus Ulrichoceras Foerste, 1928 † (CYRTOGOMPHOCERATIDAE) (FOSSIL)
- Ulrichoconus, Genus Ulrichoconus Stinchcomb & Angeli, 2002 † (SHELBYOCERIDAE) (FOSSIL)
- Ulrichospira, Genus Ulrichospira Donald, 1905 † (PHANEROTREMATIDAE) (FOSSIL)
- ulrikae, Albinaria ulrikae M. Schilthuizen & E. Gittenberger, 1990 - (CLAUSILIIDAE)
- ulrikae, Byssodesma ulrikae Isberg, 1934 † - (MODIOMORPHIDAE) (FOSSIL)
- ulskii, Pyrgula ulskii (S. Clessin & W. Dybowski in W. Dybowski, 1888) - (HYDROBIIDAE)
- ulterior, Argna biplicata ulterior M. Klemm, 1962 - (ARGNIDAE)
- ulterior, Holmitheca ulterior A.V. Sysoev, 1968 † - (TETRATHECIDAE) (FOSSIL)
- ultima, Amastra ultima H.A. Pilsbry & C.M. Cooke, 1914 - (AMASTRIDAE)
- ultima, Helicostyla cincinniformis ultima W.J. Clench & S. Archer, 1931 - (BRADYBAENIDAE)
- ultima, Nassicola ultima A.G. Beu, 1973 † - (BUCCINIDAE) (FOSSIL)
- ultima, Cerithioderma ultima P. Lozouet, 1998 † - (CAPULIDAE) (FOSSIL)
- ultima, Pleuromeris ultima R.K. Dell, 1956 - (CARDITIDAE)
- ultima, Ceratotheca ultima Novák, 1891 † - (CERATOTHECIDAE) (FOSSIL)
- ultima, Strophiops ultima C.J. Maynard, 1913 - (CERIONIDAE)
- ultima, Serrulella ultima H. Nordsieck, 2007 † - (CLAUSILIIDAE) (FOSSIL)
- ultima, Stereophaedusa japonica ultima (H.A. Pilsbry, 1909) - (CLAUSILIIDAE)
- ultima, Diplommatina ultima H.A. Pilsbry & Y. Hirase, 1909 - (DIPLOMMATINIDAE)
- ultima, Coneuplecta ultima Y. Hirase, 1908 - (EUCONULIDAE)
- ultima, Eucycloscala ultima J.P.J. Ravn, 1933 † - (EUCYCLOSCALIDAE) (FOSSIL)
- ultima, Humboldtiana ultima H.A. Pilsbry, 1927 - (HUMBOLDTIANIDAE)
- ultima, Candidula ultima (A. Mousson, 1872) - (HYGROMIIDAE)
- ultima, Cernuella ultima E. Caziot, 1910 - syn of: Cernuella neglecta (J.P.R. Draparnaud, 1805) - (HYGROMIIDAE)
- ultima, Buehreriella ultima M. Collignon, 1969 † - (MUNIERICERATIDAE) (FOSSIL)
- ultima, Murchisonella ultima E. Rolán, R. Fernández-Garcés & F. Rubio, 2013 - (MURCHISONELLIDAE)
- ultima, Ledella ultima (E.A. Smith, 1885) - (NUCULANIDAE)
- ultima, Nuculana ultima E.A. Smith, 1885 - syn of: Ledella ultima (E.A. Smith, 1885) - (NUCULANIDAE)
- ultima, Adalaria ultima Martynov & Korshunova, 2017 - (ONCHIDORIDIDAE)
- ultima, Rissopsetia ultima Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- ultima, Phosinella ultima (C.F. Laseron, 1956) - (RISSOINIDAE)
- ultima, Phintorene ultima C.F. Laseron, 1956 - syn of: Phosinella ultima (C.F. Laseron, 1956) - (RISSOINIDAE)
- ultima, Thyasira ultima B.S. Payne & J.A. Allen, 1991 - (THYASIRIDAE)
- ultima tsukushiana, Diplommatina ultima tsukushiana J.T. Kuroda - (DIPLOMMATINIDAE)
- ultimathule, Vertigo ultimathule T. von Proschwitz, 2007 - (VERTIGINIDAE)
- ultimum, Puncticeras ultimum (Schindewolf, 1923 †) - (CHEILOCERATIDAE) (FOSSIL)
- ultimum, Neophylloceras ultimum Spath, 1953 † - (NEOPHYLLOCERATIDAE) (FOSSIL)
- ultimum, Lytophiceras ultimum Spath, 1935 † - (OPHICERATIDAE) (FOSSIL)
- ultimum, Teinostoma ultimum H.A. Pilsbry & A.A. Olsson, 1945 - (TORNIDAE)
- ultimum, Cabrieroceras ultimum Töneböhn, 1991 † - (WERNEROCERATIDAE) (FOSSIL)
- ultimus, Pyrazisinus ultimus E.J. Petuch, 2004 † - (BATILLARIIDAE) (FOSSIL)
- ultimus, Belemnites ultimus A.V.M.D. D'Orbigny, 1847 † - syn of: Hibolithes ultimus (A.V.M.D. D'Orbigny, 1847 †) - (BELEMNITELLIDAE) (FOSSIL)
- ultimus, Conus ultimus H.A. Pilsbry & Johnson, 1917 † - (CONIDAE) (FOSSIL)
- ultimus, Pachydiscus ultimus Macellari, 1986 † - (DESMOCERATIDAE) (FOSSIL)
- ultimus, Straparollus ultimus E.A.L. Kittl, 1891 † - (EUOMPHALIDAE) (FOSSIL)
- ultimus, Hibolithes ultimus (A.V.M.D. D'Orbigny, 1847 †) - (MESOHIBOLITHIDAE) (FOSSIL)
- Ultimus, syn of: Genus Cyphoma P.F. Röding, 1798 (OVULIDAE)
- ultimus, Neoaganides ultimus W. Korn & Ghaderi, 2015 † - (PSEUDOHALORITIDAE) (FOSSIL)
- ultinatum, Neophylloceras ultinatum Spath, 1953 † - (NEOPHYLLOCERATIDAE) (FOSSIL)
- ultra, Melanoides ultra T. Iredale, 1943 - (THIARIDAE)
- ultraabyssalis, Paracalliloncha ultraabyssalis (V.J. Lus, 1983) - (BUCCINIDAE)
- ultraabyssalis, Oenopotella ultraabyssalis A.V. Sysoev, 1988 - (MANGELIIDAE)
- ultraabyssalis, Parayoldiella ultraabyssalis (Z.A. Filatova, 1971) - (NUCULANIDAE)
- ultraabyssalis, Ledella ultraabyssalis Z.A. Filatova, 1971 - syn of: Parayoldiella ultraabyssalis (Z.A. Filatova, 1971) - (NUCULANIDAE)
- ultraabyssalis, Tuskaroria ultraabyssalis A.V. Sysoev, 1988 - (RAPHITOMIDAE)
- ultraabyssalis, Yoldiella ultraabyssalis Z.A. Filatova, 1971 - syn of: Parayoldiella ultraabyssalis (Z.A. Filatova, 1971) - (YOLDIIDAE)
- ultraabyssalis aleutica, Oenopotella ultraabyssalis aleutica A.V. Sysoev, 1988 - (MANGELIIDAE)
- ultralaeta, Parthenina ultralaeta (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- ultralaeta, Sulcoturbonilla ultralaeta S. Nomura, 1936 - syn of: Parthenina ultralaeta (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- ultramontana, Pseudamnicola ultramontana W.A. Wenz, 1919 † - (HYDROBIIDAE) (FOSSIL)
- ultramontanum, Holcophylloceras ultramontanum (C.A. von Zittel, 1869 †) - (PHYLLOCERATIDAE) (FOSSIL)
- ultramontanum, Pisidium ultramontanum T. Prime, 1865 - (SPHAERIIDAE)
- ultranodosa, Miralda ultranodosa Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- Ultraphysella, Genus Ultraphysella J.D. Taylor, 2003 (PHYSIDAE)
- ultraradiatus, Paranorites ultraradiatus Bytschkov, 1976 † - syn of: Lepiskites kolymensis (A.M. Popov, 1961 †) - (ARCTOCERATIDAE) (FOSSIL)
- ultratriasicus, Pseudotropites ultratriasicus Canavari, 1882 † - (ARIETITIDAE) (FOSSIL)
- ultraviola, Leporicypraea rosea ultraviola F.Jr. Lorenz & C.B. Bridges, 2014 - (CYPRAEIDAE)
- ultuganense, Dentoceras ultuganense Ruzhentsev & Shimanskiy, 1954 † - (DENTOCERATIDAE) (FOSSIL)
- ultuganensis, Bactrites ultuganensis Shimanskiy, 1954 † - (BACTRITIDAE) (FOSSIL)
- ulu, Epifungium ulu (H.A. Pilsbry, 1921) - (EPITONIIDAE)
- ulugana, Helicostyla satyrus ulugana (P. Bartsch, 1919) - (BRADYBAENIDAE)
- Ulungaratoconcha, Genus Ulungaratoconcha Blodgett & Cook, 2002 † (CHEENEETNUKIIDAE) (FOSSIL)
- ulvae, Peringia ulvae (T. Pennant, 1777) - (HYDROBIIDAE)
- ulvae, Monodonta ulvae A. Risso, 1826 - syn of: Phorcus articulatus (J.B.P.A. Lamarck, 1822) - (TROCHIDAE)
- ulvae, Turbo ulvae T. Pennant, 1777 - syn of: Peringia ulvae (T. Pennant, 1777) - (TURBINIDAE)
- ulvae albida, Hydrobia ulvae albida J.G. Jeffreys, 1867 - syn of: Peringia ulvae (T. Pennant, 1777) - (HYDROBIIDAE)
- ulvae pseudostagnalis, Peringia ulvae pseudostagnalis C. De Stefani, 1877 † - (HYDROBIIDAE) (FOSSIL)
- ulynense, Paratrachyceras ulynense Bychkov, 1973 † - (TRACHYCERATIDAE) (FOSSIL)
- ulynensis, Striatosirenites ulynensis Bychkov, 1973 † - (TRACHYCERATIDAE) (FOSSIL)
- ulyssi, Turbonilla ulyssi L.G. Hertlein & A.M. Strong, 1951 - (PYRAMIDELLIDAE)
- ulyssiponensis, Patella ulyssiponensis J.F. Gmelin, 1791 - (PATELLIDAE)
- ulyssiponensis aspera, Patella ulyssiponensis aspera P.F. Röding, 1798 - syn of: Patella aspera P.F. Röding, 1798 - (PATELLIDAE)
- ulyssiponensis athletica, Patella ulyssiponensis athletica W.I. Bean, 1844 - (PATELLIDAE)
- ulyssiponensis deserta, Patella ulyssiponensis deserta J.M.J. Christiaens, 1973 - syn of: Patella ulyssiponensis J.F. Gmelin, 1791 - (PATELLIDAE)
- ulyssiponensis tenerifeae, Patella ulyssiponensis tenerifeae J.F. Mabille, 1888 - (PATELLIDAE)
- umaltensis, Boreionectes umaltensis Sey, 1980 † - (PECTINIDAE) (FOSSIL)
- Umaltites, syn of: Genus Sphaeroceras Krimholz, 1939 † (SPHAEROCERATIDAE) (FOSSIL)
- umariensis, Peruvispira umariensis (Reed, 1928 †) - (GOSSELETINIDAE) (FOSSIL)
- umariensis, Pleurotomaria umariensis Reed, 1928 † - syn of: Peruvispira umariensis (Reed, 1928 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- umariensis, Ptychomphalina umariensis Reed, 1928 † - syn of: Peruvispira umariensis (Reed, 1928 †) - (PTYCHOMPHALIDAE) (FOSSIL)
- umazawensis, Kilianella umazawensis T. Sato, 1961 † - (NEOCOMITIDAE) (FOSSIL)
- umbadayi, Setobaudinia umbadayi F. Köhler, 2011 - (CAMAENIDAE)
- umbelinae, Africonus umbelinae T. Cossignani & R. Fiadeiro, 2014 - (CONIDAE)
- umbella, Patella umbella J.F. Gmelin, 1791 - syn of: Cymbula miniata (I. von Born, 1778) - (PATELLIDAE)
- Umbella, syn of: Genus Umbraculum H.C.F. Schumacher, 1817 (UMBRACULIDAE)
- umbellata, Grimpoteuthis umbellata (P. Fischer, 1884) - (OPISTHOTEUTHIDAE)
- umbellifera, Hyalogyrina umbellifera A. Warén & P. Bouchet, 2001 - (HYALOGYRINIDAE)
- umbelliformis, Trominina umbelliformis (I. Hayasaka & S. Uozumi, 1954 †) - (BUCCINIDAE) (FOSSIL)
- Umbeloceras, Genus Umbeloceras Flower, 1957 † (MANDALOCERATIDAE) (FOSSIL)
- umberatana, Glyptorhagada umberatana B.C. Cotton, 1953 - (CAMAENIDAE)
- umberlee, Halystina umberlee R.B. Salvador, D.C. Cavallari & L.R.L. Simone, 2014 - (SEGUENZIIDAE)
- umberti, Moncetia umberti W. Kobelt, 1910 - syn of: Moncetia anceyi J.R. Bourguignat, 1885 - (IRIDINIDAE)
- Umbetoceras, Genus Umbetoceras Ruzhencev & Bogoslovskaya, 1971 † (HOMOCERATIDAE) (FOSSIL)
- umbgrovei, Conorbis umbgrovei Martin, 1931 † - (CONORBIDAE) (FOSSIL)
- umbicula, Monilearia umbicula (R.J. Shuttleworth, 1852) - (COCHLICELLIDAE)
- Umbiculus, syn of: Genus Gibbula Risso, 1826 † (TROCHIDAE) (FOSSIL)
- Umbilia, Genus Umbilia F.P. Jousseaume, 1884 (CYPRAEIDAE)
- Umbilibalcis, Genus Umbilibalcis P. Bouchet & A. Warén, 1986 (EULIMIDAE)
- umbilica, Monilearia umbilica (R.J. Shuttleworth, 1852) - (COCHLICELLIDAE)
- umbilica, Lauria umbilica (J.R. Roth, 1839) - (LAURIIDAE)
- umbilicalis, Neactaeonina umbilicalis A.N. Golikov & Fedjakov, 1987 - syn of: Toledonia limnaeoides (N.H. Odhner, 1913) - (ACTEONIDAE)
- umbilicalis, Cypraea umbilicalis A. da Costa, 1830 - syn of: Trivia arctica (R. Pulteney, 1799) - (CYPRAEIDAE)
- umbilicalis, Toledonia umbilicalis A.N. Golikov & Fedjakov, 1987 - syn of: Toledonia limnaeoides (N.H. Odhner, 1913) - (DIAPHANIDAE)
- umbilicalis, Margarites umbilicalis W.J. Broderip & G.B. I Sowerby, 1829 - syn of: Margarites groenlandicus umbilicalis (W.J. Broderip & G.B. I Sowerby, 1829) - (MARGARITIDAE)
- umbilicalis, Margarites groenlandicus umbilicalis (W.J. Broderip & G.B. I Sowerby, 1829) - (MARGARITIDAE)
- umbilicalis, Hippeutis umbilicalis W.H. Benson, 1855 - (PLANORBIDAE)
- umbilicalis, Gibbula umbilicalis (E.M. Da Costa, 1778) - (TROCHIDAE)
- umbilicalis, Trochus umbilicalis W.J. Broderip & W.J. Broderip, 1829 † - syn of: Ambercyclus espinosus (Ferrari, 2009 †) - (TROCHIDAE) (FOSSIL)
- umbilicalis, Valvata umbilicalis C.A. Westerlund, 1878 - syn of: Valvata macrostoma (O.A.L. Mörch, 1864) - (VALVATIDAE)
- umbilicalis turgida, Hippeutis umbilicalis turgida W.H. Benson, 1855 - (PLANORBIDAE)
- umbilicare, Trigonostoma umbilicare (G.B. Brocchi, 1814 ) - (CANCELLARIIDAE)
- umbilicare, Eutrephoceras umbilicare (G.P. Deshayes, 1835 †) - (NAUTILIDAE) (FOSSIL)
- umbilicare parvotriangula, Trigonostoma umbilicare parvotriangula F. Sacco, 1894 † - syn of: Trigonostoma parvotriangula (F. Sacco, 1894 †) - (CANCELLARIIDAE) (FOSSIL)
- umbilicaris, Ataxus umbilicaris (L.F.A. Souleyet, 1842) - (BULIMULIDAE)
- umbilicaris, Helix umbilicaris A.G. Olivi, 1792 - syn of: Cernuella umbilicaris (A.G. Olivi, 1792) - (HELICIDAE)
- umbilicaris, Helix umbilicaris L. Brumati, 1838 - syn of: Faustina illyrica (G. Stabile, 1864) - (HELICIDAE)
- umbilicaris, Hydrobia girondica umbilicaris A.E.M. Cossmann & M.A. Peyrot, 1918 † - (HYDROBIIDAE) (FOSSIL)
- umbilicaris, Cernuella umbilicaris (A.G. Olivi, 1792) - (HYGROMIIDAE)
- umbilicaris, Odostomia umbilicaris (A.W. Malm, 1863) - (PYRAMIDELLIDAE)
- umbilicaris, Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris, Xenophora umbilicaris (D.C. Solander in G. Brander, 1766) - (XENOPHORIDAE)
- umbilicaris, Paravitrea umbilicaris (C.M.F. Ancey, 1887) - (ZONITIDAE)
- umbilicaris concolor, Trochus umbilicaris concolor M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris conica, Gibbula umbilicaris conica T.A. de M. Monterosato, 1888 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris doriae, Trochus umbilicaris doriae C.M. Tapparone-Canefri, 1869 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris elongata, Odostomia umbilicaris elongata J.G. Jeffreys, 1867 - syn of: Odostomia acuta J.G. Jeffreys, 1848 - (PYRAMIDELLIDAE)
- umbilicaris globosa, Gibbula umbilicaris globosa T.A. de M. Monterosato, 1888 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris gouini, Gibbula umbilicaris gouini T.A. de M. Monterosato, 1888 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris intermedia, Gibbula umbilicaris intermedia P.M. Pallary, 1912 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris latior, Gibbula umbilicaris latior T.A. de M. Monterosato, 1878 - (TROCHIDAE)
- umbilicaris nebulosa, Gibbula umbilicaris nebulosa (R.A. Philippi, 1848) - (TROCHIDAE)
- umbilicaris nobrei, Gibbula umbilicaris nobrei T.A. de M. Monterosato, 1888 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris rubescens, Gibbula umbilicaris rubescens T.A. de M. Monterosato, 1888 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris schroeteri, Xenophora umbilicaris schroeteri (J.F. Gmelin, 1791) - (XENOPHORIDAE)
- umbilicaris soluta, Trochus umbilicaris soluta M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris tessellata, Trochus umbilicaris tessellata C.M. Tapparone-Canefri, 1869 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicaris undulata, Trochus umbilicaris undulata M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1884 - syn of: Gibbula umbilicaris (C. Linnaeus, 1758) - (TROCHIDAE)
- umbilicata, Tornatellaria umbilicata (C.M.F. Ancey, 1889) - (ACHATINELLIDAE)
- umbilicata, Achatinella umbilicata L. Pfeiffer - syn of: Amastra umbilicata L. Pfeiffer, 1856 - (ACHATINELLIDAE)
- umbilicata, Lissachatina fulica umbilicata (G. Nevill, 1879) - (ACHATINIDAE)
- umbilicata, Amastra umbilicata L. Pfeiffer, 1856 - (AMASTRIDAE)
- umbilicata, Anatoma umbilicata (J.G. Jeffreys, 1883) - (ANATOMIDAE)
- umbilicata, Straparella umbilicata Batten, 1966 † - (ANOMPHALIDAE) (FOSSIL)
- umbilicata, Acmella umbilicata J.J. Vermeulen, T.S. Liew & M. Schilthuizen, 2015 - (ASSIMINEIDAE)
- umbilicata, Bulla umbilicata Roeding, 1798 † - (BULLIDAE) (FOSSIL)
- umbilicata, Bulla umbilicata G. Montagu, 1803 - syn of: Retusa umbilicata (G. Montagu, 1803) - (BULLIDAE)
- umbilicata, Bulla umbilicata P.F. Röding, 1798 - syn of: Bulla occidentalis A. Adams, 1850 - (BULLIDAE)
- umbilicata, Crepidula umbilicata (Johnston, 1885 †) - (CALYPTRAEIDAE) (FOSSIL)
- umbilicata, Calyptropsis umbilicata Johnston, 1885 † - syn of: Crepidula umbilicata (Johnston, 1885 †) - (CALYPTRAEIDAE) (FOSSIL)
- umbilicata, Amplirhagada burnerensis umbilicata G.A. Solem, 1981 - (CAMAENIDAE)
- umbilicata, Glyptorhagada wilkawillina umbilicata G.A. Solem, 1992 - (CAMAENIDAE)
- umbilicata, Cancellaria umbilicata R.P. Lesson, 1842 - (CANCELLARIIDAE)
- umbilicata, Cardita umbilicata G.P. Deshayes, 1854 - syn of: Cardita pica L.A. Reeve, 1843 - (CARDITIDAE)
- umbilicata, Semicassis umbilicata (W.H. Pease, 1861) - (CASSIDAE)
- umbilicata, Oocorys umbilicata J.F. Quinn, 1980 - syn of: Oocorys sulcata P. Fischer, 1884 - (CASSIDAE)
- umbilicata, Skenella umbilicata W.F. Ponder, 1983 - (CINGULOPSIDAE)
- umbilicata, Montenegrina umbilicata (O. Böttger, 1879) - (CLAUSILIIDAE)
- umbilicata, Montenegrina cattaroensis umbilicata (O. Boettger, 1879) - (CLAUSILIIDAE)
- umbilicata, Monilearia umbilicata T.V. Wollaston, 1878 - syn of: Monilearia caementitia (R.J. Shuttleworth, 1852) - (COCHLICELLIDAE)
- umbilicata, Sioliella umbilicata Wesselingh, 2006 † - (COCHLIOPIDAE) (FOSSIL)
- umbilicata, Argalista umbilicata A.W.B. Powell, 1926 - (COLLONIIDAE)
- umbilicata, Cylichna umbilicata (G. Montagu, 1803 †) - (CYLICHNIDAE) (FOSSIL)
- umbilicata, Cymaclymenia umbilicata (G.G. Münster, 1832 †) - (CYMACLYMENIIDAE) (FOSSIL)
- umbilicata, Erronea umbilicata L.W. Dillwyn, 1823 - syn of: Erronea onyx succincta (C. Linnaeus, 1758) - (CYPRAEIDAE)
- umbilicata, Cypraea umbilicata G.B. I Sowerby, 1825 - syn of: Umbilia hesitata (T. Iredale, 1916) - (CYPRAEIDAE)
- umbilicata, Umbilia umbilicata G.B. I Sowerby, 1825 - syn of: Umbilia hesitata (T. Iredale, 1916) - (CYPRAEIDAE)
- umbilicata, Drillia umbilicata Gray, 1847 - (DRILLIIDAE)
- umbilicata, Eotomaria umbilicata E.K. Yoo, 1994 † - syn of: Stenoloron umbilicata (E.K. Yoo, 1994 †) - (EOTOMARIIDAE) (FOSSIL)
- umbilicata, Niso umbilicata Lea, 1833 † - (EULIMIDAE) (FOSSIL)
- umbilicata, Telleria umbilicata E.A.L. Kittl, 1894 † - (EULIMIDAE) (FOSSIL)
- umbilicata, Eulima umbilicata Stoppani, 1857 † - syn of: Omphaloptycha aldrovandii (Stoppani, 1857 †) - (EULIMIDAE) (FOSSIL)
- umbilicata, Fusinus syracusanus umbilicata G.S. Coen, 1922 - (FASCIOLARIIDAE)
- umbilicata, Baylea umbilicata A. Nützel & Ketwetsuriya, 2016 † - (GOSSELETINIDAE) (FOSSIL)
- umbilicata, Stenoloron umbilicata (E.K. Yoo, 1994 †) - (GOSSELETINIDAE) (FOSSIL)
- umbilicata, Ludwigia umbilicata (Buckman, 1904 †) - (GRAPHOCERATIDAE) (FOSSIL)
- umbilicata, Eobania umbilicata A. Castriota, 1899 - syn of: Eobania vermiculata (O.F. Müller, 1774) - (HELICIDAE)
- umbilicata, Tingitana laffiteana umbilicata P.M. Pallary, 1928 - (HELICIDAE)
- umbilicata, Tingitana minetti umbilicata (P.M. Pallary, 1918) - (HELICIDAE)
- umbilicata, Helicotoma umbilicata Ulrich & Scofield, 1897 † - (HELICOTOMIDAE) (FOSSIL)
- umbilicata, Helminthoglypta umbilicata H.A. Pilsbry, 1898 - (HELMINTHOGLYPTIDAE)
- umbilicata, Boleana umbilicata (L. Kušcer, 1932) - (HYDROBIIDAE)
- umbilicata, Pyrgulopsis umbilicata R. Hershler, 1998 - (HYDROBIIDAE)
- umbilicata, Ponentina umbilicata A.E.J. Férussac, 1821 - syn of: Ponentina subvirescens (J.C. Bellamy, 1839) - (HYGROMIIDAE)
- umbilicata, Janthina umbilicata D'Orbigny, 1840 - (JANTHINIDAE)
- umbilicata, Lauria umbilicata J.P.R. Draparnaud, 1801 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (LAURIIDAE)
- umbilicata, Clappia umbilicata (B. Walker, 1904) - (LITHOGLYPHIDAE)
- umbilicata, Laevilitorina umbilicata G.J. Pfeffer in E.C. Von Martens & G.J. Pfeffer, 1886 - (LITTORINIDAE)
- umbilicata, Callucina umbilicata (G.P. Deshayes, 1857 †) - (LUCINIDAE) (FOSSIL)
- umbilicata, Paladilhia umbilicata (É.A.A. Locard, 1902) - (MOITESSIERIIDAE)
- umbilicata, Oppelina umbilicata Buckman † - (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- umbilicata, Rolandiella umbilicata (J.E. Tenison-Woods, 1876) - (MURICIDAE)
- umbilicata, Purpura umbilicata B.W. Jenkins, 1964 - syn of: Indothais lacera (I. von Born, 1778) - (MURICIDAE)
- umbilicata, Nassa umbilicata G.S. Coen, 1933 † - syn of: Tritia mutabilis (C. Linnaeus, 1758 †) - (NASSARIIDAE) (FOSSIL)
- umbilicata, Eunaticina umbilicata (J.R.C. Quoy & J.P. Gaimard, 1832) - (NATICIDAE)
- umbilicata, Natica umbilicata J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Eunaticina umbilicata (J.R.C. Quoy & J.P. Gaimard, 1832) - (NATICIDAE)
- umbilicata, Habuprionovolva umbilicata (G.B. II Sowerby, 1848) - (OVULIDAE)
- umbilicata, Ovula umbilicata G.B. I Sowerby, 1848 - syn of: Diminovula margarita (G.B. I Sowerby, 1828) - (OVULIDAE)
- umbilicata, Partula umbilicata W.H. Pease, 1866 - (PARTULIDAE)
- umbilicata, Philine umbilicata R. Murdoch & H.H. Suter, 1906 - (PHILINIDAE)
- umbilicata, Physella umbilicata (J.W. Mighels, 1848) - (PHYSIDAE)
- umbilicata, Sansonia umbilicata F.P. Jousseaume, 1921 - syn of: Sansonia andamanica (H.B. Preston, 1908) - (PICKWORTHIIDAE)
- umbilicata, Tetranota umbilicata Yü, 1961 † - (PLECTONOTIDAE) (FOSSIL)
- umbilicata, Anculosa umbilicata A. Wetherby, 1876 - (PLEUROCERIDAE)
- umbilicata, Pterotrachea umbilicata S. Delle Chiaje, 1841 - syn of: Pterotrachea coronata P. Forsskål in C. Niebuhr, 1775 - (PTEROTRACHEIDAE)
- umbilicata, Pupilla umbilicata J.P.R. Draparnaud, 1801 - syn of: Lauria cylindracea (E.M. Da Costa, 1778) - (PUPILLIDAE)
- umbilicata, Hedleya umbilicata N.H. Odhner, 1917 - (PUPINIDAE)
- umbilicata, Tiberia umbilicata (G.P. Deshayes, 1861 †) - (PYRAMIDELLIDAE) (FOSSIL)
- umbilicata, Odostomia umbilicata J. Alder, 1850 - syn of: Odostomia acuta J.G. Jeffreys, 1848 - (PYRAMIDELLIDAE)
- umbilicata, Pyramidula umbilicata (G. Montagu, 1803) - (PYRAMIDULIDAE)
- umbilicata, Euryomphalia umbilicata H.H. Beck, 1837 - syn of: Pyramidula rupestris (J.P.R. Draparnaud, 1801) - (PYRAMIDULIDAE)
- umbilicata, Retusa umbilicata (G. Montagu, 1803) - (RETUSIDAE)
- umbilicata, Rissoella confusa umbilicata W.F. Ponder & E.K. Yoo, 1977 - (RISSOELLIDAE)
- umbilicata, Voorwindia umbilicata W.F. Ponder, 1985 - (RISSOIDAE)
- umbilicata, Roxania umbilicata T. Habe, 1955 - (SCAPHANDRIDAE)
- umbilicata, Scissurella umbilicata J.G. Jeffreys, 1883 - syn of: Anatoma umbilicata (J.G. Jeffreys, 1883) - (SCISSURELLIDAE)
- umbilicata, Euconia umbilicata Dake & Bridge, 1932 † - (SINUOPEIDAE) (FOSSIL)
- umbilicata, Sinuopea umbilicata Ulrich & al., 1931 † - syn of: Sinuopea vera Ulrich & al., 1931 † - (SINUOPEIDAE) (FOSSIL)
- umbilicata, Sphincterochila pagodula umbilicata (J. Rutlant Basset, 1878) - (SPHINCTEROCHILIDAE)
- umbilicata, Pseudoglessula umbilicata H.A. Pilsbry, 1919 - (SUBULINIDAE)
- umbilicata, Pyrgina umbilicata T. Kira, 1955 - (SUBULINIDAE)
- umbilicata, Tegula umbilicata C.E. Lischke in T. Iwakawa, 1919 - syn of: Tegula argyrostoma turbinata (A. Adams, 1853) - (TEGULIDAE)
- umbilicata, Caperella umbilicata C.F. Laseron, 1958 - (TORNIDAE)
- umbilicata, Rotella umbilicata H.C. Lea, 1843 - syn of: Teinostoma umbilicatum (Lea, 1843) - (TROCHIDAE)
- umbilicata, Trypanaxis umbilicata (J.B.P.A. Lamarck, 1804 †) - (TRYPANAXIDAE) (FOSSIL)
- umbilicata, Idiopoma umbilicata (H.C. Lea, 1856) - (VIVIPARIDAE)
- umbilicata, Endoptygma umbilicata (Tourney, 1854 †) - (XENOPHORIDAE) (FOSSIL)
- umbilicata, Glyphyalinia umbilicata T.D.A. Cockerell, 1893 - (ZONITIDAE)
- umbilicata aenigma, Habuprionovolva umbilicata aenigma M. Azuma & C.N. Cate, 1971 - syn of: Habuprionovolva aenigma (M. Azuma & C.N. Cate, 1971) - (OVULIDAE)
- umbilicata arenarum, Amastra umbilicata arenarum H.A. Pilsbry & C.M. Cooke, 1914 - (AMASTRIDAE)
- umbilicata costata, Montenegrina umbilicata costata (O. Böttger, 1907) - (CLAUSILIIDAE)
- umbilicata depressa, Scissurella umbilicata depressa É.A.A. Locard, 1898 - syn of: Anatoma tenuis (J.G. Jeffreys, 1877) - (SCISSURELLIDAE)
- umbilicata nitidula, Retusa umbilicata nitidula S.L. Lovén, 1846 - syn of: Cylichnina nitidula (S.L. Lovén, 1846) - (RETUSIDAE)
- umbilicata pluscula, Amastra umbilicata pluscula C.M. Cooke, 1917 - (AMASTRIDAE)
- umbilicatellus, Bostryx infundibulum umbilicatellus H.A. Pilsbry, 1896 - (BULIMULIDAE)
- umbilicatellus, Promenetus umbilicatellus (T.D.A. Cockerell, 1887) - (PLANORBIDAE)
- Umbilicatiana, syn of: Genus Lauria J.E. Gray in W.H. Turton, 1840 (LAURIIDAE)
- umbilicatissima, Odostomia umbilicatissima A. Peñas & E. Rolán, 1999 - (PYRAMIDELLIDAE)
- umbilicatoides, Tornoceras umbilicatoides Sobolew, 1914 † - syn of: Protornoceras simplificatum (Sobolew, 1914 †) - (TORNOCERATIDAE) (FOSSIL)
- umbilicatum, Heligmopoma umbilicatum F. Haas, 1955 - (COCHLIOPIDAE)
- umbilicatum, Homalopoma umbilicatum A.N. Golikov & V.V. Gulbin, 1978 - (COLLONIIDAE)
- umbilicatum, Kufengoceras umbilicatum (J.K. Zhao, 1955 †) - (CYCLOLOBIDAE) (FOSSIL)
- umbilicatum, Paradimeroceras umbilicatum Sobolew, 1914 † - syn of: Paradimeroceras beneckei (Wedekind, 1908 †) - (DIMEROCERATIDAE) (FOSSIL)
- umbilicatum, Plectostoma umbilicatum (W.S.S. Van Benthem-Jutting, 1952) - (DIPLOMMATINIDAE)
- umbilicatum, Epitonium umbilicatum (W.H. Pease, 1869) - (EPITONIIDAE)
- umbilicatum, Domatoceras umbilicatum A. Hyatt, 1893 † - (GRYPOCERATIDAE) (FOSSIL)
- umbilicatum, Mercaticeras umbilicatum Buckman, 1913 † - (HILDOCERATIDAE) (FOSSIL)
- umbilicatum, Bollandites umbilicatum (Bisat, 1934 †) - (MAXIGONIATITIDAE) (FOSSIL)
- umbilicatum, Fenolignum umbilicatum G.J. Vermeij & E.H. Vokes, 1997 † - (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- umbilicatum, Eulithidium umbilicatum (A.V.M.D. D'Orbigny, 1840) - (PHASIANELLIDAE)
- umbilicatum, Reticuloceras umbilicatum Bisat & Hudson, 1943 † - (RETICULOCERATIDAE) (FOSSIL)
- umbilicatum, Teinostoma umbilicatum (Lea, 1843) - (TORNIDAE)
- umbilicatum, Tornoceras umbilicatum Sobolew, 1912 † - syn of: Protornoceras curvidorsata (Sobolew, 1912 †) - (TORNOCERATIDAE) (FOSSIL)
- umbilicatum, Trochonema umbilicatum (J.W. Hall, 1847 †) - (TROCHONEMATIDAE) (FOSSIL)
- umbilicatum mimicum, Propesinum umbilicatum mimicum T. Iredale, 1924 - syn of: Eunaticina umbilicata (J.R.C. Quoy & J.P. Gaimard, 1832) - (NATICIDAE)
- umbilicatum minusculum, Propesinum umbilicatum minusculum T. Iredale, 1924 - syn of: Eunaticina umbilicata (J.R.C. Quoy & J.P. Gaimard, 1832) - (NATICIDAE)
- umbilicatus, Ammonites umbilicatus Klipstein, 1843 † - syn of: Megaphyllites jarbas (Münster, 1841 †) - (AMMONITIDA (unassigned)) (FOSSIL)
- umbilicatus, Lanistes umbilicatus Musalizi, 2017 † - (AMPULLARIIDAE) (FOSSIL)
- umbilicatus, Sanyangites umbilicatus J.K. Zhao & al., 1978 † - (ARAXOCERATIDAE) (FOSSIL)
- umbilicatus, Teutonophon umbilicatus (V.L.V. Potiez & A. Michaud, 1838 †) - (BELLEROPHONTIDAE) (FOSSIL)
- umbilicatus, Trichotropis umbilicatus J. Smith, 1839 - syn of: Ariadnaria borealis (W.J. Broderip & G.B. I Sowerby, 1829) - (CAPULIDAE)
- umbilicatus, Cladiscites umbilicatus C. Gemmellaro, 1904 † - (CLADISCITIDAE) (FOSSIL)
- umbilicatus, Planulites umbilicatus G.G. Münster, 1832 † - syn of: Cymaclymenia umbilicata (G.G. Münster, 1832 †) - (CLYMENIIDAE) (FOSSIL)
- umbilicatus, Euomphalus umbilicatus F.B. Meek & A.H. Worthen, 1860 † - (EUOMPHALIDAE) (FOSSIL)
- umbilicatus, Glabrocingulum umbilicatus Batten, 1985 † - (GOSSELETINIDAE) (FOSSIL)
- umbilicatus, Somatogyrus umbilicatus B. Walker, 1904 - syn of: Clappia umbilicata (B. Walker, 1904) - (LITHOGLYPHIDAE)
- umbilicatus, Mytilus umbilicatus T. Pennant, 1777 - syn of: Modiolus modiolus (C. Linnaeus, 1758) - (MYTILIDAE)
- umbilicatus, Didymoceras umbilicatus (F.B. Meek & Hayden, 1858 †) - (NOSTOCERATIDAE) (FOSSIL)
- umbilicatus, Oecotraustes umbilicatus (Buckman, 1926 †) - (OPPELIIDAE) (FOSSIL)
- umbilicatus, Strigogoniatites umbilicatus Liang, 1981 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- umbilicatus, Cleistosphinctes umbilicatus Galácz, 2012 † - (PERISPHINCTIDAE) (FOSSIL)
- umbilicatus, Cleistosphinctes umbilicatus Galacz, 2012 † - (PERISPHINCTIDAE) (FOSSIL)
- umbilicatus, Anomphalodes umbilicatus Knight, 1933 † - (PLANORBIDAE) (FOSSIL)
- umbilicatus, Neoplanorbis umbilicatus B. Walker, 1908 - (PLANORBIDAE)
- umbilicatus, Bulinus umbilicatus G. Mandahl-Barth, 1973 - (PLANORBIDAE)
- umbilicatus, Planorbis umbilicatus O.F. Müller, 1774 - syn of: Planorbis planorbis (C. Linnaeus, 1758) - (PLANORBIDAE)
- umbilicatus, Trochus umbilicatus G. Montagu, 1803 - syn of: Gibbula umbilicalis (E.M. Da Costa, 1778) - (TROCHIDAE)
- Umbilicatus, syn of: Genus Tropidodiscus Meek & Worthen, 1866 † (TROPIDODISCIDAE) (FOSSIL)
- umbilicatus, Melo umbilicatus W.J. Broderip in G.B. I Sowerby, 1826 - (VOLUTIDAE)
- umbilicatus atropurpurea, Trochus umbilicatus atropurpurea J.G. Jeffreys, 1865 - syn of: Gibbula umbilicalis (E.M. Da Costa, 1778) - (TROCHIDAE)
- umbilicatus decorata, Trochus umbilicatus decorata J.G. Jeffreys, 1865 - syn of: Gibbula umbilicalis (E.M. Da Costa, 1778) - (TROCHIDAE)
- umbilicatus depressiuscula, Bulinus umbilicatus depressiuscula G. Mandahl-Barth, 1973 - (PLANORBIDAE)
- umbilicatus laeta, Trochus umbilicatus laeta R.T. Lowe, 1861 - syn of: Gibbula pennanti (R.A. Philippi, 1846) - (TROCHIDAE)
- umbilicatus nehdense, Goniatites umbilicatus nehdense P. Kaiser, 1873 † - syn of: Paratorleyoceras nehdense (P. Kaiser, 1873 †) - (GONIATITIDAE) (FOSSIL)
- umbilicatus subangulatus, Planorbis umbilicatus subangulatus R.A. Philippi, 1844 - syn of: Planorbis planorbis (C. Linnaeus, 1758) - (PLANORBIDAE)
- umbilicifera, Maackia umbilicifera (Starostin, 1926) - (AMNICOLIDAE)
- umbiliciferus, Anisus umbiliciferus (Kozhov, 1936) - (PLANORBIDAE)
- umbilicina, Ocenebra umbilicina A.E.M. Cossmann & M.A. Peyrot, 1923 † - syn of: Ocenebra sublavata umbilicina A.E.M. Cossmann & M.A. Peyrot, 1923 † - (MURICIDAE) (FOSSIL)
- umbilicina, Ocenebra sublavata umbilicina A.E.M. Cossmann & M.A. Peyrot, 1923 † - (MURICIDAE) (FOSSIL)
- umbilicocarinata, Euspira umbilicocarinata E. Robba, Pedriali & E. Quaggiotto, 2016 † - (NATICIDAE) (FOSSIL)
- umbilicoliratus, Anomphalus umbilicoliratus R.L. Batten, 1966 † - (ANOMPHALIDAE) (FOSSIL)
- umbilicolunata, Euspira umbilicolunata E. Robba, Pedriali & E. Quaggiotto, 2016 † - (NATICIDAE) (FOSSIL)
- umbilicoparvum, Parasteroceras umbilicoparvum Geczy & Meister, 2007 † - (ARIETITIDAE) (FOSSIL)
- umbilicorda, Tornus umbilicorda E. Rolán & F. Rubio, 2002 - (TORNIDAE)
- umbilicostatus, Neodeshayesites umbilicostatus (P.H. Scott, 1940 †) - (DESHAYESITIDAE) (FOSSIL)
- umbilicostriata, Quirella umbilicostriata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- umbilicostriata, Dikoleps umbilicostriata (A. Gaglini, 1987) - (SKENEIDAE)
- umbilicostriatus, Eotetragonites umbilicostriatus (M. Collignon 1963 †) - (GAUDRYCERATIDAE) (FOSSIL)
- umbilicum, Stephanoceras umbilicum (F.A. von Quenstedt, 1886 †) - (STEPHANOCERATIDAE) (FOSSIL)
- umbilicus, Goniatites umbilicus F.A. Roemer, 1855 † - (GONIATITIDAE) (FOSSIL)
- Umbilidelos, Genus Umbilidelos J. Stanisic, 2010 (RHYTIDIDAE)
- umbilifer, Cheiloceras umbilifer Sobolew, 1914 † - (CHEILOCERATIDAE) (FOSSIL)
- umbiliferum, Paratorleyoceras umbiliferum (Sobolew, 1914 †) - (CHEILOCERATIDAE) (FOSSIL)
- umbilifusca, Babylonia umbilifusca E. Gittenberger & J. Goud, 2003 - (BABYLONIIDAE)
- umbiliglabra, Anticlimax umbiliglabra F. Rubio & E. Rolán, 2014 - (TORNIDAE)
- Umbiliini, syn of: Genus Pseudozonaria F.A. Schilder, 1927 (CYPRAEIDAE)
- umbiliobsessa, Tomura umbiliobsessa E. Rolán & F. Rubio, 2008 - (CORNIROSTRIDAE)
- umbiliparva, Eucochlis umbiliparva E.K. Yoo, 1994 † - (EUCOCHLIDAE) (FOSSIL)
- umbo, Damilina umbo (J. Perner, 1903 †) - (DAMILINIDAE) (FOSSIL)
- Umboinum, syn of: Genus Umbonium J.H.F. Link, 1807 (TROCHIDAE)
- umbonale, Anarcestes umbonale Wedekind, 1918 † - syn of: Clarkeoceras umbonale (Wedekind, 1918 †) - (ANARCESTIDAE) (FOSSIL)
- umbonale, Clarkeoceras umbonale (Wedekind, 1918 †) - (ELLESMEROCERATIDAE) (FOSSIL)
- umbonalis, Chamalycaeus umbonalis (W.H. Benson, 1856) - (CYCLOPHORIDAE)
- umbonaria, Arca umbonaria C. Mayer, 1861 † - (ARCIDAE) (FOSSIL)
- umbonata, Mytilarca umbonata J.W. Hall, 1883 † - (AMBONYCHIIDAE) (FOSSIL)
- umbonata, Isomonia umbonata (A.A. Gould, 1861) - (ANOMIIDAE)
- umbonata, Monia umbonata A.A. Gould, 1861 - syn of: Isomonia umbonata (A.A. Gould, 1861) - (ANOMIIDAE)
- umbonata, Placunanomia umbonata A.A. Gould, 1861 - syn of: Isomonia umbonata (A.A. Gould, 1861) - (ANOMIIDAE)
- umbonata, Arca umbonata J.B.P.A. Lamarck, 1819 - syn of: Arca imbricata J.G. Bruguière, 1789 - (ARCIDAE)
- umbonata, Neptunea umbonata A.N. Golikov, 1963 - syn of: Neptunea umbratica K. Fraussen & Y. Terryn, 2007 - (BUCCINIDAE)
- umbonata, Vexillum umbonata G.B. Sowerby, 1870 - syn of: Orphanopusia osiridis (A. Issel, 1869) - (COSTELLARIIDAE)
- umbonata, Vanuxemia umbonata Ulrich, 1894 † - (CYRTODONTIDAE) (FOSSIL)
- umbonata, Allorisma umbonata Lutkevitch & Lobanova, 1960 † - syn of: Exochorhynchus similis (Lutkevitch & Lobanova, 1960 †) - (EDMONDIIDAE) (FOSSIL)
- umbonata, Helicina umbonata R.J. Shuttleworth, 1854 - (HELICINIDAE)
- umbonata, Lutetia umbonata G.P. Deshayes, 1858 † - (LUTETIIDAE) (FOSSIL)
- umbonata, Mytilus umbonata H.E. Anton, 1838 - syn of: Mytella guyanensis (J.B.P.A. Lamarck, 1819) - (MYTILIDAE)
- umbonata, Mytella umbonata H.E. Anton, 1838 - syn of: Mytella guyanensis (J.B.P.A. Lamarck, 1819) - (MYTILIDAE)
- umbonata, Striarca umbonata T.A. Conrad, 1875 † - (NOETIIDAE) (FOSSIL)
- umbonata, Nucula umbonata G. Seguenza, 1876 - syn of: Nucula tumidula A.W. Malm, 1861 - (NUCULIDAE)
- umbonata, Nucula umbonata E.A. Smith, 1891 - syn of: Nucula praetenta T. Iredale, 1924 - (NUCULIDAE)
- umbonata, Palaeomutela umbonata (Fischer, 1840 †) - (PALAEOMUTELIDAE) (FOSSIL)
- umbonata, Plethocardia umbonata Ulrich, 1894 † - (PLETHOCARDIIDAE) (FOSSIL)
- umbonata, Plicatula umbonata Imlay, 1940 † - (PLICATULIDAE) (FOSSIL)
- umbonata, Cetomya umbonata (J. Knudsen, 1982) - (POROMYIDAE)
- umbonata, Siphonaria umbonata K.T. Menke, 1853 - syn of: Siphonaria pectinata (C. Linnaeus, 1758) - (SIPHONARIIDAE)
- umbonata, Potomida littoralis umbonata E.A. Rossmässler, 1844 - (UNIONIDAE)
- umbonatum, Cardium umbonatum S.V. Wood, 1850 - syn of: Cerastoderma glaucum (J.G. Bruguière, 1789) - (CARDIIDAE)
- umbonatum, Cerithium umbonatum G.B. II Sowerby, 1855 - syn of: Cerithium atratum (I. von Born, 1778) - (CERITHIIDAE)
- umbonatum, Davila umbonatum E.A. Smith, 1885 - syn of: Neolepton umbonatum (E.A. Smith, 1885) - (MESODESMATIDAE)
- umbonatum, Kurtiella umbonatum (Carpenter, 1857) - (MONTACUTIDAE)
- umbonatum, Neolepton umbonatum (E.A. Smith, 1885) - (NEOLEPTONIDAE)
- umbonatus, Cardites umbonatus (G.B. III Sowerby, 1904) - (CARDITIDAE)
- umbonatus, Tompoproptychites umbonatus Vavilov, 1976 † - (PROPTYCHITIDAE) (FOSSIL)
- umbonella, Paramytilarca umbonella Isberg, 1934 † - (AMBONYCHIIDAE) (FOSSIL)
- umbonella, Tellina umbonella J.B.P.A. Lamarck, 1818 - (TELLINIDAE)
- Umbonella, syn of: Genus Isanda H. Adams & A. Adams, 1854 (TROCHIDAE)
- umbonella, Callista umbonella (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- umbonella, Periglypta umbonella J.B.P.A. Lamarck, 1818 - syn of: Callista umbonella (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- umbonella, Meretrix umbonella J.B.P.A. Lamarck, 1818 - syn of: Callista umbonella (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- umbonella nivea, Callista umbonella nivea S.C.T. Hanley, 1843 - (VENERIDAE)
- Umbonellina, Genus Umbonellina Koken & Perner, 1925 † (CRASPEDOSTOMATIDAE) (FOSSIL)
- umbonicola, Boonea umbonicola S. Hori & T.A. Okutani, 1995 - syn of: Boonea umboniocola S. Hori & T.A. Okutani, 1995 - (PYRAMIDELLIDAE)
- umboniinflata, Saccella umboniinflata F.E. Eames, 1951 † - (NUCULANIDAE) (FOSSIL)
- umboniocola, Boonea umboniocola S. Hori & T.A. Okutani, 1995 - (PYRAMIDELLIDAE)
- umbonis, Kimberleytrachia umbonis (G.A. Solem, 1979) - (CAMAENIDAE)
- umbonis, Torresitrachia umbonis G.A. Solem, 1979 - syn of: Kimberleytrachia umbonis (G.A. Solem, 1979) - (CAMAENIDAE)
- Umbonis, syn of: Subgenus Cerion (Strophiops) W.H. Dall, 1894 (CERIONIDAE)
- Umbonitrochus, syn of: Genus Umbotrochus Perner 1903 † (TROCHIDAE) (FOSSIL)
- Umbonium, Genus Umbonium J.H.F. Link, 1807 (TROCHIDAE)
- umboseriata, Trituba umboseriata Darragh, 2017 † - (NEWTONIELLIDAE) (FOSSIL)
- Umbospira, Genus Umbospira Perner, 1903 † (SINUOPEIDAE) (FOSSIL)
- Umbosporadoceras, Genus Umbosporadoceras Becker & al., 2002 † (SPORADOCERATIDAE) (FOSSIL)
- Umbotrochus, Genus Umbotrochus Perner 1903 † (TROCHIDAE) (FOSSIL)
- Umbotropis, Genus Umbotropis Perner , 1903 † (GOSSELETINIDAE) (FOSSIL)
- umbra, Emmericia umbra C. De Stefani, 1877 † - (AMNICOLIDAE) (FOSSIL)
- umbra, Grandinenia umbra (C.K. Chang, 2004) - (CLAUSILIIDAE)
- umbra, Angulus umbra W.H. Dall, 1900 † - (TELLINIDAE) (FOSSIL)
- umbra rex, Grandinenia umbra rex H. Nordsieck, 2007 - (CLAUSILIIDAE)
- UMBRACULIDAE Dall, 1889 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-UMBRACULIDA [Order]-UMBRACULOIDEA [Superfamily])
- umbraculorum, Tengchiena umbraculorum (J.C. Cox, 1864) - (EUCONULIDAE)
- umbraculum, Patella umbraculum J. Lightfoot, 1786 - syn of: Umbraculum umbraculum (J. Lightfoot, 1786) - (PATELLIDAE)
- Umbraculum, Genus Umbraculum H.C.F. Schumacher, 1817 (UMBRACULIDAE)
- umbraculum, Umbraculum umbraculum (J. Lightfoot, 1786) - (UMBRACULIDAE)
- umbraculum, Umbraculum umbraculum P.F. Röding, 1798 - syn of: Umbraculum umbraculum (J. Lightfoot, 1786) - (UMBRACULIDAE)
- umbraculum plicatulum, Umbraculum umbraculum plicatulum (E.C. Von Martens, 1881) - (UMBRACULIDAE)
- umbraculum sinicum, Umbraculum umbraculum sinicum (J.F. Gmelin, 1791) - (UMBRACULIDAE)
- umbrana, Anchura umbrana L.W. Stephenson, 1953 † - (APORRHAIDAE) (FOSSIL)
- umbrans, Villosa umbrans (I. Lea, 1857) - (UNIONIDAE)
- umbrata, Chondrothyra atristoma umbrata C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- umbratica, Neptunea umbratica K. Fraussen & Y. Terryn, 2007 - (BUCCINIDAE)
- umbratica, Oospira umbratica M. Szekeres, 1970 - syn of: Oospira vanbuensis (A.R.J.B. Bavay & P. Dautzenberg, 1899) - (CLAUSILIIDAE)
- umbraticola, Macrochlamys umbraticola H.H. Godwin-Austen - (ARIOPHANTIDAE)
- umbraticus, Mesembrinus umbraticus (L.A. Reeve, 1849) - (BULIMULIDAE)
- umbraticus, Pterocyclus umbraticus (W.S.S. Van Benthem-Jutting, 1949) - (CYCLOPHORIDAE)
- umbraticus, Mediterranea umbraticus J.R. Bourguignat, 1880 - syn of: Mediterranea hydatina (E.A. Rossmässler, 1838) - (OXYCHILIDAE)
- umbratilis, Striatura umbratilis (R.J.L. Guppy, 1868) - (GASTRODONTIDAE)
- umbrella, Crucibulum umbrella (G.P. Deshayes, 1830) - (CALYPTRAEIDAE)
- umbrella, Doris umbrella A. de Rochebrune, 1895 - (DORIDIDAE)
- umbrella, Umbraculum umbrella (T. Martyn, 1784) - (UMBRACULIDAE)
- Umbrella, syn of: Genus Umbraculum H.C.F. Schumacher, 1817 (UMBRACULIDAE)
- Umbrellancylus, Genus Umbrellancylus Piton, 1940 † (PLANORBIDAE) (FOSSIL)
- umbrellata, Patella umbrellata S. Delle Chiaje, 1830 - syn of: Umbraculum umbraculum (J. Lightfoot, 1786) - (PATELLIDAE)
- umbrica, Helix umbrica J.F. Mabille, 1867 - syn of: Ambigua signata (A.E.J. Férussac, 1821) - (HELICIDAE)
- umbricata, Charonia umbricata A. Adams, 1868 - syn of: Charonia tritonis (C. Linnaeus, 1758) - (RANELLIDAE)
- umbricola, Parachondria umbricola (C.D. Weinland) - (POMATIIDAE)
- umbricola cayemitensis, Parachondria umbricola cayemitensis (C.D. Weinland) - (POMATIIDAE)
- umbriensis, Aaleniella umbriensis L.F. Conti & Fischer, 1981 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- umbriensis, Anticlimax umbriensis Fischer & al., 2002 † - (TORNIDAE) (FOSSIL)
- umbrifer, Pterorytis umbrifer (T.A. Conrad, 1832 †) - (MURICIDAE) (FOSSIL)
- umbrina, Macrochlamys umbrina (L. Pfeiffer, 1859) - (ARIOPHANTIDAE)
- umbrina, Turbonilla umbrina J.C. Melvill, 1918 - (PYRAMIDELLIDAE)
- umbrosa, Amastra pullata umbrosa D.D. Baldwin, 1895 - (AMASTRIDAE)
- umbrosa, Formosana umbrosa H. Nordsieck, 2007. - (CLAUSILIIDAE)
- umbrosa, Strobeliella umbrosa (F. Käufel, 1928) - (CLAUSILIIDAE)
- umbrosa, Vexillum umbrosa G.B. III Sowerby, 1874 - syn of: Vexillum plicarium (C. Linnaeus, 1758) - (COSTELLARIIDAE)
- umbrosa, Akramovskiella umbrosa (A. Mousson, 1873) - (ENIDAE)
- umbrosa, Helix umbrosa P. Partsch in C. Pfeiffer, 1828 - syn of: Urticicola umbrosa (P. Partsch in C. Pfeiffer, 1828) - (HELICIDAE)
- umbrosa, Urticicola umbrosa (P. Partsch in C. Pfeiffer, 1828) - (HYGROMIIDAE)
- umbrosa, Porphyria umbrosa P.F. Röding, 1798 - syn of: Oliva oliva (C. Linnaeus, 1758) - (OLIVIDAE)
- umbrosa, Pilsbryspira umbrosa (J.C. Melvill, 1923) - (PSEUDOMELATOMIDAE)
- umbrosa, Cyrtonaias umbrosa (I. Lea, 1856) - (UNIONIDAE)
- umbrosa talyschana, Akramovskiella umbrosa talyschana (O. Böttger, 1882) - (ENIDAE)
- Umbrostrea, Genus Umbrostrea Hautmann, 2001 † (OSTREIDAE) (FOSSIL)
- umbrosus, Limax umbrosus R.A. Philippi, 1844 - syn of: Limacus flavus (C. Linnaeus, 1758) - (LIMACIDAE)
- umbulazi, Pseudoschloenbachia umbulazi (J.L.Jr. Baily, 1855 †) - (MUNIERICERATIDAE) (FOSSIL)
- umbulaziforme, Niceforoceras umbulaziforme Basse, 1948 † - (COLLIGNONICERATIDAE) (FOSSIL)
- Umburra, Genus Umburra P. A. Johnston, 1991 † (UMBURRIDAE) (FOSSIL)
- UMBURRIDAE P. A. Johnston, 1991 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-OSTREIDA [Order]-RHOMBOPTERIOIDEA [Superfamily]) (FOSSIL)
aaa
abx
ack
acy
adn
aer
afs
ajd
alc
alj
alu
amc
ams
and
anh
anp
anu
apl
arb
ard
arh
ars
asr
atl
atu
aus
aut
bab
baj
bao
bas
baw
bem
bes
bid
bim
bit
bli
bom
bos
bov
bre
bri
bry
bum
bys
caa
cak
cam
cao
cas
cau
cem
ces
che
chk
chy
cio
cle
cob
coh
com
con
coo
cos
cot
cre
cri
cru
cud
cuo
cuy
cym
daa
dam
dav
ded
dem
deo
det
dib
dih
dir
dit
dom
dos
duc
duq
eag
ecr
egg
elf
elp
enh
eov
erf
erz
eud
eus
exb
exl
exy
faa
fan
fat
fes
fim
fle
flu
fos
fre
fuf
fur
fut
gaa
gam
gav
geo
gie
gis
gle
glu
goo
gre
gru
gug
guz
haa
ham
has
heb
hem
hes
hif
his
hom
hou
hun
hye
iac
ilm
imt
ind
inf
ing
int
inu
irm
isp
jaa
jao
jaw
joi
juk
kaa
kao
kaz
kes
kio
koc
kot
kuk
laa
lad
laf
lan
las
lau
lec
leo
leq
lew
lim
lio
liu
loo
lub
lun
luv
maa
mad
mah
mam
mao
mas
mav
mee
mem
mes
mey
mid
min
mio
mit
moe
moo
mos
mum
mut
nab
nao
nav
nel
neq
nex
nih
niu
noe
nou
nue
oaf
obn
obu
oci
oke
olk
oos
orc
oro
osu
ove
paa
paf
pam
paq
pas
pau
pay
pem
pes
pfi
phl
pid
pio
ple
plo
pom
pos
pre
pro
pru
psi
pul
pum
pup
put
pys
qag
qub
rab
rah
ras
red
reh
reu
rhu
rin
roc
rot
rox
rue
ruh
ryd
saa
sai
san
sao
sav
sce
sci
scy
sem
sen
ses
shl
sih
sin
sio
smo
som
soy
sph
spj
sra
stg
sts
suc
sum
suv
szo
tab
tal
taq
tay
ten
teo
tes
tha
thl
tif
toc
tos
tre
trl
try
tuc
tus
uac
ume
uni
urd
vaa
vap
vas
vep
ves
vid
vip
vis
vob
vup
waa
wam
weg
who
wom
xac
yaa
yot
zaa
zem
zoo
|