- exquisita, Acanthochitona exquisita (H.A. Pilsbry, 1893) - (ACANTHOCHITONIDAE)
- exquisita, Anatoma exquisita M.M. Schepman, 1908 - syn of: Anatoma japonica (C.B. Adams, 1862) - (ANATOMIDAE)
- exquisita, Hydatina exquisita R.P.A. Voskuil, 1995 - (APLUSTRIDAE)
- exquisita, Spirolaxis exquisita W.H. Dall & C.T. Simpson, 1901 - syn of: Spirolaxis centrifuga (T.A. de M. Monterosato, 1890) - (ARCHITECTONICIDAE)
- exquisita, Omphalotropis exquisita (L. Pfeiffer, 1855) - (ASSIMINEIDAE)
- exquisita, Fusipagoda exquisita (W.H. Dall, 1913) - (BUCCINIDAE)
- exquisita, Mohnia exquisita W.H. Dall, 1913 - syn of: Fusipagoda exquisita (W.H. Dall, 1913) - (BUCCINIDAE)
- exquisita, Bullina exquisita J.T.L. McGinty, 1955 - (BULLINIDAE)
- exquisita, Fusiaphera exquisita H.B. Preston, 1905 - syn of: Fusiaphera macrospira producta (A. Adams & L.A. Reeve, 1850) - (CANCELLARIIDAE)
- exquisita, Sundaya exquisita W.R.B. Oliver, 1915 - (CERITHIOPSIDAE)
- exquisita, Seila exquisita A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- exquisita, Cerithiopsis exquisita G.B. III Sowerby, 1897 - (CERITHIOPSIDAE)
- exquisita, Pseudocharopa exquisita A.J. Peile, 1929 - (CHAROPIDAE)
- exquisita, Discocharopa exquisita T. Iredale, 1913 - (CHAROPIDAE)
- exquisita, Lienardia exquisita (G. Nevill & H. Nevill, 1875) - (CLATHURELLIDAE)
- exquisita, Thala exquisita A. Garrett, 1872 - (COSTELLARIIDAE)
- exquisita, Costellaria exquisita G.B. III Sowerby, 1889 - syn of: Vexillum suluense (A. Adams & L.A. Reeve, 1850) - (COSTELLARIIDAE)
- exquisita, Cylichna exquisita J.T.L. McGinty, 1955 - (CYLICHNIDAE)
- exquisita, Polymesoda exquisita (T. Prime, 1867) - (CYRENIDAE)
- exquisita, Cyanocyclas exquisita W.B. Marshall, 1924 - syn of: Corbicula limosa (W.G. Maton, 1809) - (CYRENIDAE)
- exquisita, Turritoma exquisita P. Bartsch, 1941 - syn of: Oenopota candida (M. Yokoyama, 1926) - (EOTOMARIIDAE)
- exquisita, Foratiscala exquisita P. Bouchet & A. Warén, 1986 - syn of: Eccliseogyra exquisita (P. Bouchet & A. Warén, 1986) - (EPITONIIDAE)
- exquisita, Mucronalia exquisita G.B. III Sowerby, 1915 - (EULIMIDAE)
- exquisita, Cranopsis exquisita (A. Adams, 1853) - (FISSURELLIDAE)
- exquisita, Fissurella exquisita L.A. Reeve, 1840 - syn of: Fissurella radiosa R.P. Lesson, 1831 - (FISSURELLIDAE)
- exquisita, Rimula exquisita A. Adams, 1853 - syn of: Cranopsis exquisita (A. Adams, 1853) - (FISSURELLIDAE)
- exquisita, Cataschisma exquisita (Lindström, 1884 †) - (GOSSELETINIDAE) (FOSSIL)
- exquisita, Haloceras exquisita A. Warén & P. Bouchet, 1991 - (HALOCERATIDAE)
- exquisita, Austroharpa exquisita (T. Iredale, 1931) - (HARPIDAE)
- exquisita, Anacithara exquisita C. Hedley, 1922 - (HORAICLAVIDAE)
- exquisita, Julia exquisita A.A. Gould, 1862 - (JULIIDAE)
- exquisita, Lucina exquisita F.E. Eames, 1951 † - (LUCINIDAE) (FOSSIL)
- exquisita, Propebela exquisita P. Bartsch, 1941 - (MANGELIIDAE)
- exquisita, Cytharopsis exquisita (E.A. Smith, 1882) - (MANGELIIDAE)
- exquisita, Curtitoma exquisita (M. Yokoyama, 1926) - (MANGELIIDAE)
- exquisita, Serrata exquisita F. Boyer, 2008 - (MARGINELLIDAE)
- exquisita, Mitra exquisita A. Garrett, 1873 - syn of: Vexillum exquisitum (A. Garrett, 1873) - (MITRIDAE)
- exquisita, Nassaria exquisita K. Fraussen & G.T. Poppe, 2007 - (NASSARIIDAE)
- exquisita, Eccliseogyra exquisita (P. Bouchet & A. Warén, 1986) - (NYSTIELLIDAE)
- exquisita, Belloliva exquisita (G.F. Angas, 1871) - (OLIVIDAE)
- exquisita, Pseudocypraea exquisita E.J. Petuch, 1979 - (PEDICULARIIDAE)
- exquisita, Martesia exquisita P. Bartsch & H.A. Rehder, 1945 - syn of: Martesia fragilis A.E. Verrill & K.J. Bush, 1898 - (PHOLADIDAE)
- exquisita, Phyllidia exquisita D.J. Brunckhorst, 1993 - (PHYLLIDIIDAE)
- exquisita, Eirlysia exquisita Batten, 1956 † - (PHYMATOPLEURIDAE) (FOSSIL)
- exquisita, Pinna exquisita (W.H. Dall, P. Bartsch & H.A. Rehder, 1938) - (PINNIDAE)
- exquisita, Subitopinna exquisita W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Pinna exquisita (W.H. Dall, P. Bartsch & H.A. Rehder, 1938) - (PINNIDAE)
- exquisita, Scissurella exquisita M.M. Schepman, 1908 - syn of: Anatoma japonica (C.B. Adams, 1862) - (SCISSURELLIDAE)
- exquisita, Benthobrookula exquisita (A.H. Clarke, 1961) - (SEGUENZIOIDEA (unassigned))
- exquisita, Brookula exquisita A.H. Clarke, 1961 - syn of: Benthobrookula exquisita (A.H. Clarke, 1961) - (SEGUENZIOIDEA (unassigned))
- exquisita, Tjaernoeia exquisita (J.G. Jeffreys, 1883) - (TJAERNOEIIDAE)
- exquisita, Pleurotoma exquisita E.A. Smith, 1882 - syn of: Cytharopsis exquisita (E.A. Smith, 1882) - (TURRIDAE)
- exquisita, Torrecoptis barbouri exquisita (W.J. Clench, 1966) - (UROCOPTIDAE)
- exquisita borbonica, Julia exquisita borbonica G.P. Deshayes, 1863 - (JULIIDAE)
- exquisitum, Vexillum exquisitum (A. Garrett, 1873) - (COSTELLARIIDAE)
- exquisitum, Morum exquisitum (A. Adams & L.A. Reeve, 1848) - (HARPIDAE)
- exquisitum, Trachysma exquisitum J.G. Jeffreys, 1883 - syn of: Tjaernoeia exquisita (J.G. Jeffreys, 1883) - (PENDROMIDAE)
- exquisitum, Chondropometes exquisitum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- exquisitum cereum, Chondropometes exquisitum cereum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- exquisitum notatum, Chondropometes exquisitum notatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- exquisitum punctolineatum, Chondropometes exquisitum punctolineatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- exquisitus, Sphaerocyclus exquisitus Spitz, 1907 † - (BELLEROPHONTIDAE) (FOSSIL)
- exquisitus, Conus exquisitus G.B. III Sowerby, 1887 - syn of: Purpuriconus cardinalis (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- exquisitus, Collina exquisitus Spitz, 1907 † - (DACTYLIOCERATIDAE) (FOSSIL)
- exquisitus, Buliminus exquisitus G. Nägele, 1901 - (ENIDAE)
- exquisitus, Euphemites exquisitus E.L. Yochelson, 1960 † - (EUPHEMITIDAE) (FOSSIL)
- exquisitus, Subpterynotus exquisitus (G.B. III Sowerby, 1904) - (MURICIDAE)
- exquisitus, Lacunoides exquisitus A. Warén & P. Bouchet, 1989 - (NEOMPHALIDAE)
- exquisitus, Cyclopecten exquisitus G. Grau, 1959 - (PROPEAMUSSIIDAE)
- exquisitus, Parathetidites exquisitus (McLearn, 1947 †) - (THETIDITIDAE) (FOSSIL)
- exquisitus, Solariorbis exquisitus H.A. Pilsbry & A.A. Olsson, 1952 - (TORNIDAE)
- exquisitus, Carswellena exquisitus (G.F. Angas, 1877) - (TURBINIDAE)
- exrectus, Ramosites exrectus Ruzhencev & Bogoslovskaya, 1978 † - (RAMOSITIDAE) (FOSSIL)
- Exrhysota, Subgenus Bertia (Exrhysota) F.C. Baker, 1941 (TROCHOMORPHIDAE)
- exsanguis, Indomitrella exsanguis K. Monsecour & D. Monsecour, 2016 - (COLUMBELLIDAE)
- exsarcus, Nassarius exsarcus (W.H. Dall, 1908) - (NASSARIIDAE)
- exsculpta, Bohaispira exsculpta Y.F. Huang, 1983 † - (BOHAISPIRIDAE) (FOSSIL)
- exsculpta, Pollia exsculpta (F. Dujardin, 1837 †) - (BUCCINIDAE) (FOSSIL)
- exsculpta, Cominella exsculpta (H.H. Suter, 1917 †) - (BUCCINIDAE) (FOSSIL)
- exsculpta, Tritonidea exsculpta F. Dujardin, 1837 † - syn of: Pollia aquitanensis (M.A. Peyrot, 1924 †) - (BUCCINIDAE) (FOSSIL)
- exsculpta, Etrema exsculpta A.W.B. Powell, 1944 † - (CLATHURELLIDAE) (FOSSIL)
- exsculpta, Drillia exsculpta R.B. Watson, 1882 - syn of: Belomitra pourtalesii (W.H. Dall, 1881) - (DRILLIIDAE)
- exsculpta, Mangelia exsculpta R.B. Watson, 1881 - (MANGELIIDAE)
- exsculpta, Mangelia exsculpta W.H. Dall, 1889 - syn of: Belomitra pacifica (W.H. Dall, 1908) - (MANGELIIDAE)
- exsculpta, Pleurotoma exsculpta R.B. Watson, 1882 - syn of: Belomitra pourtalesii (W.H. Dall, 1881) - (TURRIDAE)
- exsculptum, Buccinulum vittatum exsculptum A.W.B. Powell, 1929 - (BUCCINIDAE)
- exsculptus, Cantharus exsculptus (F. Dujardin, 1837 †) - (BUCCINIDAE) (FOSSIL)
- exsculptus, Fusiguraleus exsculptus (A.W.B. Powell, 1942 †) - (MANGELIIDAE) (FOSSIL)
- exsculptus, Paratrophon cheesemani exsculptus A.W.B. Powell, 1933 - (MURICIDAE)
- exserta, Tornatina exserta C. Hedley, 1903 - (CYLICHNIDAE)
- exserta, Scacchia exserta J. van der Linden, 1996 - (LASAEIDAE)
- exserta, Littorina exserta P. Dautzenberg & H. Fischer, 1915 - syn of: Littorina obtusata (C. Linnaeus, 1758) - (LITTORINIDAE)
- exserta, Oenopota exserta C.W.S. Aurivillius, 1885 - syn of: Oenopota violacea (J.W. Mighels & C.B. Adams, 1842) - (MANGELIIDAE)
- exserta, Brotia oppenoorthi exserta C.H. Oostingh, 1935 - (PACHYCHILIDAE)
- exserta, Syrnola exserta C.F. Laseron, 1959 - (PYRAMIDELLIDAE)
- exserta, Ringicula exserta R.B. Hinds - (RINGICULIDAE)
- exserta, Alvania exserta (H.H. Suter, 1908) - (RISSOIDAE)
- exserta, Stenotheca exserta Sardeson † - (STENOTHECIDAE) (FOSSIL)
- exserta, Tryblidium exserta Sardeson, 1892 † - (TRYBLIDIIDAE) (FOSSIL)
- exserta, Tapes exserta A. Römer, 1872 - syn of: Marcia recens (H.S. Holten, 1802) - (VENERIDAE)
- exsertum, Dendropoma exsertum (W.H. Dall, 1881) - (VERMETIDAE)
- exsertus, Straparollus exsertus Hudleston † - (EUOMPHALIDAE) (FOSSIL)
- exsertus, Geophorus exsertus (E.C. Von Martens, 1891) - (HELICINIDAE)
- exsertus, Radulonectites exsertus C. Chen, 1982 † - (PECTINIDAE) (FOSSIL)
- exsignata, Sepia exsignata K.H. Barnard, 1962 - syn of: Sepia burnupi W.E. Hoyle, 1904 - (SEPIIDAE)
- exsiliens, Trochagnesia exsiliens (C.L.F. von Sandberger & C.L.F. von Sandberger, 1853 †) - (PORCELLIIDAE) (FOSSIL)
- exsilium, Blauneria exsilium H.B. Preston, 1912 - (ELLOBIIDAE)
- exspectata, Circuloscala exspectata M.E.A. de Boury, 1913 † - syn of: Epitonium subscalare (A.V.M.D. D'Orbigny, 1852 †) - (EPITONIIDAE) (FOSSIL)
- exspectatus, Crickites exspectatus Wedekind, 1913 † - syn of: Clauseniceras expectatum (Wedekind, 1913 †) - (GEPHUROCERATIDAE) (FOSSIL)
- exspinata, Hysteroconcha exspinata L.A. Reeve, 1863 - syn of: Hysteroconcha lupanaria (R.P. Lesson, 1831) - (VENERIDAE)
- exsputa, Amalda exsputa (J.A. Bartrum & Powell, 1928 †) - (ANCILLARIIDAE) (FOSSIL)
- exstans, Mangelia exstans K.H. Barnard, 1958 - (MANGELIIDAE)
- exstincteliratus, Nassarius exstincteliratus (Fischer in J. Wanner, 1927 †) - (NASSARIIDAE) (FOSSIL)
- exstriatulum, Pratulum exstriatulum F. Sacco, 1899 - syn of: Pratulum pulchellum (J.E. Gray, 1843) - (CARDIIDAE)
- exstriolata, Raphitoma exstriolata S. Cerulli-Irelli, 1910 - syn of: Mangelia costulata A. Risso, 1826 - (RAPHITOMIDAE)
- exstructa, Comitas exstructa (E.C. Von Martens, 1904) - (PSEUDOMELATOMIDAE)
- Exsuavitas, Subgenus Aquebana (Exsuavitas) F.C. Baker, 1939 (SAGDIDAE)
- exsul, Maclurites exsul E.F.R.K. Koken, 1897 † - (MACLURITIDAE) (FOSSIL)
- exsul, Pellasimnia exsul T. Iredale, 1935 - syn of: Pellasimnia maccoyi (J.E. Tenison-Woods, 1878) - (OVULIDAE)
- exsul, Phenacovolva exsul T. Iredale, 1935 - syn of: Pellasimnia angasi (L.A. Reeve, 1865) - (OVULIDAE)
- exsulans, Tritonia exsulans L.S.R. Bergh, 1894 - (TRITONIIDAE)
- exsulcata, Syrnola exsulcata A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- exsultans, Papuina exsultans (C.M. Tapparone-Canefri, 1883) - (CAMAENIDAE)
- extendia, Worthenia extendia Tong & Erwin, 2001 † - (LOPHOSPIRIDAE) (FOSSIL)
- Extendilabrum, syn of: Genus Patellilabia Knight, 1945 † (KNIGHTITIDAE) (FOSSIL)
- extensa, Leptachatina extensa W.H. Pease, 1870 - (AMASTRIDAE)
- extensa, Pomacea extensa (J.P. Müller, 1879) - (AMPULLARIIDAE)
- extensa, Astarte extensa B. Phillips, 1929 † - (ASTARTIDAE) (FOSSIL)
- extensa, Gervilliopsis ensiformis extensa L.W. Stephenson, 1941 † - (BAKEVELLIIDAE) (FOSSIL)
- extensa, Chloraea extensa (O.F. Müller, 1774) - (BRADYBAENIDAE)
- extensa, Buchia extensa Holdhaus, 1913 † - (BUCHIIDAE) (FOSSIL)
- extensa, Cupedora extensa T. Iredale, 1937 - (CAMAENIDAE)
- extensa, Strophiops extensa C.J. Maynard, 1924 - (CERIONIDAE)
- extensa, Albinaria teres extensa (L. Pfeiffer, 1864) - (CLAUSILIIDAE)
- extensa, Omphaloptycha extensa E.A.L. Kittl, 1899 † - (COELOSTYLINIDAE) (FOSSIL)
- extensa, Naticopsis extensa C.O. Waterhouse, 1963 † - (DELPHINULOPSIDAE) (FOSSIL)
- extensa, Radix extensa (Gorjanovic-Kramberger, 1890 †) - (LYMNAEIDAE) (FOSSIL)
- extensa, Plethospira extensa J. Heller, 1954 † - (MURCHISONIIDAE) (FOSSIL)
- extensa, Vitularia extensa M. Smith, 1947 - syn of: Vitularia salebrosa (P.P. King, 1832) - (MURICIDAE)
- extensa, Opisthoteuthis extensa K.H.J. Thiele, 1915 - (OPISTHOTEUTHIDAE)
- extensa, Crassostrea extensa (G.P. Deshayes, 1832 †) - (OSTREIDAE) (FOSSIL)
- extensa, Tragatoma extensa (Heidenhain, 1869 †) - (PLEUROTOMARIOIDEA (unassigned)) (FOSSIL)
- extensa, Mioawateria extensa (W.H. Dall, 1881) - (RAPHITOMIDAE)
- extensa, Juga extensa (Martens, 1905) - (SEMISULCOSPIRIDAE)
- extensa, Trochotoma extensa (Morris & Lycett) † - (TROCHOTOMIDAE) (FOSSIL)
- extensa, Yoldiella extensa J.A. Allen, A. Sanders & G. Hannah, 1995 - (YOLDIIDAE)
- extensaeformis, Mioawateria extensaeformis (M.M. Schepman, 1913) - (RAPHITOMIDAE)
- extensesculpta, Clavatula kraepelini extensesculpta (H. Strebel, 1914) - (CLAVATULIDAE)
- extensibilis, Deshayesiella extensibilis B.I. Sirenko, 1973 - syn of: Deshayesiella curvata (P.P. Carpenter in W.H. Dall, 1879) - (LEPTOCHITONIDAE)
- extensiva, Palaeomutela extensiva Gusev † - (PALAEOMUTELIDAE) (FOSSIL)
- extensum, Entolium extensum Yu & Li † - syn of: Entolium inequivalve I. Hayami, 1959 † - (ENTOLIIDAE) (FOSSIL)
- extensum, Aliculastrum extensum J. de C. Sowerby - (HAMINOEIDAE)
- extensum, Orthonychia extensum (Barrois, 1889 †) - (ORTHONYCHIIDAE) (FOSSIL)
- extensum, Platyceras extensum Barrois, 1889 † - syn of: Orthonychia extensum (Barrois, 1889 †) - (PLATYCERATIDAE) (FOSSIL)
- extensum, Labyrinthoceras extensum Buckman † - (SPHAEROCERATIDAE) (FOSSIL)
- extensum, Tarphyceras extensum A. Hyatt, 1894 † - (TARPHYCERATIDAE) (FOSSIL)
- extensum, Proplina extensum (Berkey, 1898 †) - (TRYBLIDIIDAE) (FOSSIL)
- extensus, Bostryx extensus F. Haas, 1955 - (BULIMULIDAE)
- extensus, Conus extensus Hoernes, 1851 † - (CONIDAE) (FOSSIL)
- extensus, Squamuliferipecten extensus (E.M. Fletcher, 1929 †) - (DELTOPECTINIDAE) (FOSSIL)
- extensus, Ectenolites extensus Flower, 1964 † - (ELLESMEROCERATIDAE) (FOSSIL)
- extensus, Worthenia extensus Yin & E.L. Yochelson, 1983 † - (LOPHOSPIRIDAE) (FOSSIL)
- extensus, Modiolus extensus Lutkevitch & Lobanova, 1960 † - (MYTILIDAE) (FOSSIL)
- extensus, Unio extensus I. Lea, 1857 - syn of: Elliptio pullata (I. Lea, 1856) - (UNIONIDAE)
- extensus, Tapes extensus É.A.A. Locard, 1886 - syn of: Venerupis decussata (C. Linnaeus, 1758) - (VENERIDAE)
- extenta, Pleurophopsis extenta E.M. Krylova & L.I. Moskalev, 1996 - syn of: Calyptogena extenta (E.M. Krylova & L.I. Moskalev, 1996) - (KELLIELLIDAE)
- extenta, Natica extenta É.A.A. Locard, 1897 - syn of: Euspira subplicata (J.G. Jeffreys, 1885) - (NATICIDAE)
- extenta, Parthenina extenta Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- extenta, Platyoptera extenta (T.A. Conrad in Wailes, 1854 †) - (ROSTELLARIIDAE) (FOSSIL)
- extenta, Policordia extenta I.N.V. Ivanova, 1977 - (VERTICORDIIDAE)
- extenta, Calyptogena extenta (E.M. Krylova & L.I. Moskalev, 1996) - (VESICOMYIDAE)
- extenta, Ectenagena extenta E.M. Krylova & L.I. Moskalev, 1996 - syn of: Calyptogena extenta (E.M. Krylova & L.I. Moskalev, 1996) - (VESICOMYIDAE)
- extentum, Trigonia extentum Repman, 1963 † - (TRIGONIIDAE) (FOSSIL)
- extenuata, Opisthoptera extenuata Ulrich, 1895 † - syn of: Opisthoptera alternata Ulrich, 1895 † - (AMBONYCHIIDAE) (FOSSIL)
- extenuata, Barrandicellopsis extenuata (J. Perner, 1903 †) - (ARCHINACELLIDAE) (FOSSIL)
- extenuata, Clathurella extenuata (W.H. Dall, 1927) - (CLATHURELLIDAE)
- extenuata, Corbula extenuata W.H. Dall, 1898 † - (CORBULIDAE) (FOSSIL)
- extenuata, Ovocerina extenuata (Barrande, 1865 †) - (MANDALOCERATIDAE) (FOSSIL)
- extenuata, Murchisonia extenuata J.W. Hall 1859 † - (MURCHISONIIDAE) (FOSSIL)
- extenuata, Propeleda extenuata (W.H. Dall, 1897) - (NUCULANIDAE)
- extenuata, Nuculana extenuata W.H. Dall, 1897 - syn of: Propeleda extenuata (W.H. Dall, 1897) - (NUCULANIDAE)
- extenuata, Leda extenuata W.H. Dall, 1897 - syn of: Propeleda extenuata (W.H. Dall, 1897) - (NUCULANIDAE)
- extenuata, Orthonychia extenuata J. Perner, 1903 † - syn of: Barrandicellopsis extenuata (J. Perner, 1903 †) - (ORTHONYCHIIDAE) (FOSSIL)
- extenuata, Odostomia extenuata A. Peñas & E. Rolán, 1999 - (PYRAMIDELLIDAE)
- extenuata, Philbertia extenuata W.H. Dall, 1927 - syn of: Clathurella extenuata (W.H. Dall, 1927) - (RAPHITOMIDAE)
- extenuata, Macoma extenuata W.H. Dall, 1900 - (TELLINIDAE)
- extenuata panamensis, Macoma extenuata panamensis W.H. Dall, 1900 - syn of: Macoma panamensis W.H. Dall, 1900 - (TELLINIDAE)
- extenuatum, Gomphoceras extenuatum Barrande, 1865 † - syn of: Ovocerina extenuata (Barrande, 1865 †) - (DIESTOCERATIDAE) (FOSSIL)
- extenuatum, Cancelloceras extenuatum Ruzhencev & Bogoslovskaya, 1978 † - (GASTRIOCERATIDAE) (FOSSIL)
- extenuatum, Uraloceras extenuatum Ruzhentsev, 1956 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- extenuatus, Conus extenuatus Tate, 1890 † - (CONIDAE) (FOSSIL)
- extenuatus, Planpyrgiscus extenuatus (J. Marwick, 1924) - (PYRAMIDELLIDAE)
- extenuatus, Technophorus extenuatus (Ulrich, 1894 †) - (TECHNOPHORIDAE) (FOSSIL)
- extenuatus, Austrocochlea extenuatus P. Fischer, 1876 - syn of: Austrocochlea porcata (A. Adams, 1853) - (TROCHIDAE)
- extenuicostata, Epitonium extenuicostata M.E.A. de Boury, 1913 - syn of: Epitonium tenuicostatum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- extenuicostata, Spiniscala extenuicostata M.E.A. de Boury, 1913 - syn of: Epitonium tenuicostatum (G.B. II Sowerby, 1844) - (EPITONIIDAE)
- exterebratus, Cenoceras exterebratus (Crick, 1898 †) - (CENOCERATIDAE) (FOSSIL)
- exterebratus, Nautilus exterebratus Crick, 1898 † - syn of: Cenoceras exterebratus (Crick, 1898 †) - (NAUTILIDAE) (FOSSIL)
- externecavatus, Cladiscites externecavatus Welter, 1914 † - (CLADISCITIDAE) (FOSSIL)
- externeplicatus, Cladiscites externeplicatus Mojsisovics, 1902 † - (CLADISCITIDAE) (FOSSIL)
- externiplicatus, Anatomites externiplicatus Mojsisovics, 1893 † - (HALORITIDAE) (FOSSIL)
- externnodosum, Strebliticeras externnodosum (Dorn, 1930 †) - (OPPELIIDAE) (FOSSIL)
- externum, Phragmoceras externum C.H. Blake, 1882 † - (PHRAGMOCERATIDAE) (FOSSIL)
- externus, Monodosus externus Rubio & Rolán, 2016 - (TORNIDAE)
- exterolaevis, Ervilia exterolaevis D.T. Dockery, 1982 † - (SEMELIDAE) (FOSSIL)
- extima, Isthmia extima (C.A. Westerlund, 1877) - (VERTIGINIDAE)
- extincta, Tornatellina extincta C.M.F. Ancey - syn of: Lamellidea gracilis (W.H. Pease, 1871) - (ACHATINELLIDAE)
- extincta, Amastra extincta L. Pfeiffer, 1856 - syn of: Amastra morticina A. Hyatt & H.A. Pilsbry, 1911 - (AMASTRIDAE)
- extincta, Leptachatina extincta L. Pfeiffer, 1856 - syn of: Amastra morticina A. Hyatt & H.A. Pilsbry, 1911 - (AMASTRIDAE)
- extincta, Pseudochloritis incrassata extincta (J.P. Rambur, 1862 †) - (ELONIDAE) (FOSSIL)
- extincta, Pseudolibera extincta A.F. Sartori, O. Gargominy & Fontaine, 2014 - (ENDODONTIDAE)
- extincta, Pleuropoma extincta (N.H. Odhner, 1917) - (HELICINIDAE)
- extincta, Penitella extincta J.T. Kuroda, 1946 - (PHOLADIDAE)
- extinctorium, Desmaulus extinctorium (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- extinctorium, Calyptraea extinctorium H.M.D. de Blainville, 1825 † - syn of: Bicatillus renovata J.C.H. Crosse & Fischer, 1923 † - (CALYPTRAEIDAE) (FOSSIL)
- extinctorium, Crucibulum extinctorium J.B.P.A. Lamarck, 1822 - syn of: Desmaulus extinctorium (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- extinctorium, Calyptraea extinctorium J.B.P.A. Lamarck, 1822 - syn of: Desmaulus extinctorium (J.B.P.A. Lamarck, 1822) - (CALYPTRAEIDAE)
- extinctorium morbida, Desmaulus extinctorium morbida (L.A. Reeve, 1859) - (CALYPTRAEIDAE)
- extinctum, Phalium extinctum J.H.F. Link, 1807 - syn of: Phalium areola (C. Linnaeus, 1758) - (CASSIDAE)
- extinctus, Cadomites extinctus (F.A. von Quenstedt †) - (STEPHANOCERATIDAE) (FOSSIL)
- Extra, Genus Extra F.P. Jousseaume, 1894 (CYSTISCIDAE)
- extra, Extra extra (F.P. Jousseaume, 1894) - (CYSTISCIDAE)
- extra, Marginella extra F.P. Jousseaume, 1894 - syn of: Extra extra (F.P. Jousseaume, 1894) - (MARGINELLIDAE)
- extra, Punctum belli extra T. Iredale, 1944 - (PUNCTIDAE)
- extracarinacostata, Ammonicera extracarinacostata W.J. Sleurs, 1985 - (OMALOGYRIDAE)
- Extractrix, Subgenus Trigonostoma (Extractrix) Korobkov, 1955 † (CANCELLARIIDAE) (FOSSIL)
- Extractrix, syn of: Genus Trigonostoma H.M.D. De Blainville, 1825 (CANCELLARIIDAE)
- extralaevis, Ludwigia extralaevis (F.A. von Quenstedt †) - (GRAPHOCERATIDAE) (FOSSIL)
- extranea, Strophiops extranea C.J. Maynard, 1924 - (CERIONIDAE)
- extranea, Dosinia extranea (T. Iredale, 1937) - (VENERIDAE)
- extraneum, Vexillum extraneum G.P. Deshayes, 1865 † - (COSTELLARIIDAE) (FOSSIL)
- extraneus, Drymaeus extraneus F. Haas, 1955 - (BULIMULIDAE)
- extraneus, Torvamurex extraneus T. Iredale, 1936 - syn of: Chicoreus denudatus (G. Perry, 1811) - (MURICIDAE)
- extraneus, Visitator extraneus J. Perner, 1911 † - (PLATYCERATIDAE) (FOSSIL)
- extraneus, Streptartemon extraneus F. Haas, 1955 - (STREPTAXIDAE)
- Extranodites, Genus Extranodites Jeannet , 1951 † (ASPIDOCERATIDAE) (FOSSIL)
- extraordinaria, Aplysia extraordinaria (J.K. Allan, 1932) - (APLYSIIDAE)
- extraordinarius, Trigonodus extraordinarius Jelen, 1989 † - (PACHYCARDIIDAE) (FOSSIL)
- extravaganta, Agardhiella extravaganta P. Subai, 2008 - (ARGNIDAE)
- extrema, Cerion extrema C.J. Maynard & W.F. Clapp, 1920 - (CERIONIDAE)
- extrema, Diaphana extrema K.H.J. Thiele, 1912 - syn of: Diaphana paessleri (H. Strebel, 1905) - (DIAPHANIDAE)
- extrema, Claraia extrema Spath, 1935 † - (PTERINOPECTINIDAE) (FOSSIL)
- extrema, Cirsonella extrema K.H.J. Thiele, 1912 - (SKENEIDAE)
- extrema, Vallonia extrema C.A. Westerlund, 1898 - syn of: Vallonia pulchella (O.F. Müller, 1774) - (VALLONIIDAE)
- extremalis, Unio extremalis A.V. Martynov & A. Tshernyshev, 1992 - syn of: Nodularia douglasiae (J.E. Gray in E. Griffith & E. Pidgeon, 1834) - (UNIONIDAE)
- extremis, Cochliopina extremis J.P.E. Morrison, 1946 - (COCHLIOPIDAE)
- extremis, Eulima extremis T.H. Aldrich, 1911 † - (EULIMIDAE) (FOSSIL)
- extremis, Sonneratia extremis Casey † - (HOPLITIDAE) (FOSSIL)
- extremitatis, Oreohelix yavapai extremitatis H.A. Pilsbry & J.H. Ferriss, 1911 - (OREOHELICIDAE)
- extremum, Glyptophiceras extremum Spath, 1935 † - syn of: Tompophiceras extremum (Spath, 1935 †) - (KASHMIRITIDAE) (FOSSIL)
- extremum, Tompophiceras extremum (Spath, 1935 †) - (XENODISCIDAE) (FOSSIL)
- extremus, Euflemingites extremus Smyshlyaeva & Zakharov, 2013 † - (FLEMINGITIDAE) (FOSSIL)
- extremus, Tylotrochus extremus Garvie, 2013 † - (PROCONULIDAE) (FOSSIL)
- extremus, Retites extremus Ruzhencev & Bogoslovskaya, 1978 † - (RETICULOCERATIDAE) (FOSSIL)
- extremus, Eurycephalites extremus Tornquist, 1898 † - (SPHAEROCERATIDAE) (FOSSIL)
- extrenuatus, Endemoconus extrenuatus (R. Tate, 1890 †) - (CONIDAE) (FOSSIL)
- extricarinata, Turritella extricarinata F. Sacco, 1895 - syn of: Turritella cingulata G.B. I Sowerby, 1825 - (TURRITELLIDAE)
- Extropharciceras, Genus Extropharciceras Bockwinkel & al., 2009 † (PHARCICERATIDAE) (FOSSIL)
- extumida, Ambonychinia extumida Isberg, 1934 † - (AMBONYCHIIDAE) (FOSSIL)
- extumida, Heikea extumida Isberg, 1934 † - (CYRTODONTIDAE) (FOSSIL)
- extusdentata, Zonarina extusdentata (F. Sacco, 1894 †) - (CYPRAEIDAE) (FOSSIL)
- exuberans, Fissidentalium exuberans É.A.A. Locard, 1897 - syn of: Fissidentalium paucicostatum (R.B. Watson, 1879) - (DENTALIIDAE)
- exuberans, Chicoreus exuberans T. Cossignani, 2004 - syn of: Chicoreus bundharmai R. Houart, 1992 - (MURICIDAE)
- exuberans, Caracolus marginella exuberans (W.J. Clench & C.G. Aguayo, 1951) - (PLEURODONTIDAE)
- exul, Columbinia exul F.G. Thompson, 2008 - (CLAUSILIIDAE)
- exulans, Stereozaptyx exulans H.A. Pilsbry, 1908 - (CLAUSILIIDAE)
- exulans, Limatula exulans C.A. Fleming, 1978 † - (LIMIDAE) (FOSSIL)
- exulans, Amauropsis exulans A.A. Gould, 1841 - syn of: Amauropsis islandica (J.F. Gmelin, 1791) - (NATICIDAE)
- exulans, Leucosyrinx exulans (W.H. Dall, 1890) - (PSEUDOMELATOMIDAE)
- exulans, Pleurotoma exulans W.H. Dall, 1890 - syn of: Leucosyrinx exulans (W.H. Dall, 1890) - (TURRIDAE)
- exulata, Carditella exulata E.A. Smith, 1885 - (CONDYLOCARDIIDAE)
- exulata, Melanella exulata (E.A. Smith, 1915) - (EULIMIDAE)
- exulatus, Erycites exulatus P. Callomon & D.M. Chandler, 1994 † - syn of: Erycites barodiscus C. Gemmellaro, 1886 † - (HAMMATOCERATIDAE) (FOSSIL)
- exulatus, Nassarius exulatus (E.A. Smith, 1911) - (NASSARIIDAE)
- exulatus, Chilonopsis exulatus L.A. Reeve, 1852 - (SUBULINIDAE)
- exulcerata, Cerithium vulgatum exulcerata T.A. de M. Monterosato, 1917 - (CERITHIIDAE)
- exulta, Anadara exulta T. Iredale, 1939 - syn of: Anadara vellicata (L.A. Reeve, 1844) - (ARCIDAE)
- exulta, Terebra exulta T. Iredale, 1931 - syn of: Terebra punctatostriata J.E. Gray, 1834 - (TEREBRIDAE)
- exumaensis, Jaspidiconus exumaensis E.J. Petuch, 2013 - syn of: Conasprella jaspidea (J.F. Gmelin, 1791) - (CONIDAE)
- exumaensis, Opisthosiphon bahamiense exumaensis P. Bartsch, 1946 - (POMATIIDAE)
- exumense, Cerion exumense H.P. Plate, 1907 - (CERIONIDAE)
- exusta, Costellaria exusta P. Dautzenberg & J.L. Bouge, 1923 - syn of: Vexillum exasperatum (J.F. Gmelin, 1791) - (COSTELLARIIDAE)
- exusta, Talparia exusta (G.B. I Sowerby, 1832) - (CYPRAEIDAE)
- exusta, Cypraea exusta G.B. I Sowerby, 1832 - syn of: Talparia exusta (G.B. I Sowerby, 1832) - (CYPRAEIDAE)
- exusta, Scutellastra exusta (L.A. Reeve, 1854) - (PATELLIDAE)
- exusta, Patella exusta L.A. Reeve, 1854 - syn of: Scutellastra exusta (L.A. Reeve, 1854) - (PATELLIDAE)
- exusta, Atrina exusta (J.F. Gmelin, 1791) - (PINNIDAE)
- exusta, Elimia exusta E.L. Mihalcik & F.G. Thompson, 2002 - (PLEUROCERIDAE)
- exusta, Xenophora exusta L.A. Reeve, 1842 - syn of: Onustus exutus L.A. Reeve, 1842 - (XENOPHORIDAE)
- exusta pica, Scutellastra exusta pica (L.A. Reeve, 1854) - (PATELLIDAE)
- exustus, Brachidontes exustus (C. Linnaeus, 1758) - (MYTILIDAE)
- exustus, Indoplanorbis exustus (G.P. Deshayes, 1834) - (PLANORBIDAE)
- exustus, Strombus exustus W.J. Swainson, 1822 - syn of: Lentigo pipus (P.F. Röding, 1798) - (STROMBIDAE)
- exuta, Onoba exuta (A.W.B. Powell, 1937) - (RISSOIDAE)
- exutum, Xenophora exutum L.A. Reeve, 1843 - syn of: Onustus exutus L.A. Reeve, 1842 - (XENOPHORIDAE)
- exutus, Strombus exutus W.J. Swainson, 1822 - syn of: Lentigo pipus (P.F. Röding, 1798) - (STROMBIDAE)
- exutus, Onustus exutus L.A. Reeve, 1842 - (XENOPHORIDAE)
- exuvia, Nerita exuvia C. Linnaeus, 1758 - (NERITIDAE)
- exuviata, Crepidula exuviata L.A. Reeve, 1859 - syn of: Crepidula perforans (A. Valenciennes, 1846) - (CALYPTRAEIDAE)
- exuvioides, Theliostyla exuvioides C.T. Trechmann, 1935 † - (NERITIDAE) (FOSSIL)
- Exydra, syn of: Genus Physa J.P.R. Draparnaud, 1801 (PHYSIDAE)
- eydouxi, Chloraea eydouxi (J.G. Hidalgo, 1887) - (BRADYBAENIDAE)
- eydouxi, Alycaeus eydouxi Vermans, 1956 - (CYCLOPHORIDAE)
- eyerdami, Beringius eyerdami A.G. Smith, 1959 - (BUCCINIDAE)
- eyerdami, Puncturella eyerdami W.H. Dall, 1924 - syn of: Puncturella cooperi P.P. Carpenter, 1864 - (FISSURELLIDAE)
- eyerdami, Megalobulimus sanctipauli eyerdami (J.C. Bequaert, 1948) - (MEGALOBULIMIDAE)
- eyerdami, Eyerdamia eyerdami P. Bartsch, 1946 - (POMATIIDAE)
- eyerdami, Odostomia eyerdami P. Bartsch, 1927 - (PYRAMIDELLIDAE)
- eyerdami, Cingula eyerdami G. Willett, 1934 - syn of: Onoba carpenteri (H.C. Weinkauff, 1885) - (RISSOIDAE)
- eyerdami, Pisidium eyerdami H.B. Herrington, 1954 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- Eyerdamia, Genus Eyerdamia P. Bartsch, 1946 (POMATIIDAE)
- eyerichi, Naticopsis eyerichi (F. McCoy, 1844 †) - (DELPHINULOPSIDAE) (FOSSIL)
- eyerichi, Dicosmos eyerichi (Noetling, 1880 †) - (NATICOPSIDAE) (FOSSIL)
- Eymarella, Genus Eymarella Cossmann, 1897 † (PHYMATOPLEURIDAE) (FOSSIL)
- eyrei, Lacustrelix eyrei (A. Adams & G.F. Angas, 1876) - (CAMAENIDAE)
- eyrei, Helix eyrei A. Adams & G.F. Angas, 1876 - syn of: Lacustrelix eyrei (A. Adams & G.F. Angas, 1876) - (HELICIDAE)
- eyrei, Paziella eyrei (J.E. Tenison-Woods, 1877 †) - (MURICIDAE) (FOSSIL)
- eyrei, Talochlamys eyrei (R. Tate, 1886 †) - (PECTINIDAE) (FOSSIL)
- Eyrena, Genus Eyrena Ludbrook, 1966 † (MYTILIDAE) (FOSSIL)
- eyrensis, Pledgia eyrensis N.H. Ludbrook, 1985 † - (TRIGONIOIDIDAE) (FOSSIL)
- eyriesi, Eyriesia eyriesi (P.M.A. Morelet, 1865) - (VIVIPARIDAE)
- Eyriesia, Genus Eyriesia P. Fischer, 1885 (VIVIPARIDAE)
- eyriesii, Bulimulus eyriesii H. Drouët, 1859 - (BULIMULIDAE)
- eyriesii, Metasterkia eyriesii (H. Drouët, 1859) - (VERTIGINIDAE)
- eyriesii rhoadsi, Metasterkia eyriesii rhoadsi (H.A. Pilsbry, 1899) - (VERTIGINIDAE)
- Ezeiceras, Genus Ezeiceras Vermeulen & Bert, 1998 † (HEMIHOPLITIDAE) (FOSSIL)
- Ezilloella, Genus Ezilloella Reyment , 1954 † (VASCOCERATIDAE) (FOSSIL)
- ezilloensis, Ezilloella ezilloensis Reyment, 1954 † - (VASCOCERATIDAE) (FOSSIL)
- ezoana, Trominina ezoana (H. Takeda, 1953 †) - (BUCCINIDAE) (FOSSIL)
- ezoanum, Pseudouhligella ezoanum (E. Matsumoto, 1941 †) - (DESMOCERATIDAE) (FOSSIL)
- Ezocallista, Genus Ezocallista T. Kira, 1959 (VENERIDAE)
- ezoensis, Aglaja ezoensis K. Baba, 1937 - syn of: Melanochlamys diomedea (L.S.R. Bergh, 1894) - (AGLAJIDAE)
- ezoensis, Idonearca ezoensis Yabe & T. Nagao, 1928 † - (CUCULLAEIDAE) (FOSSIL)
- ezoensis, Myrtea ezoensis T. Nagao, 1957 † - (LUCINIDAE) (FOSSIL)
- ezoensis, Mya ezoensis T. Nagao & Inoue, 1941 † - (MYIDAE) (FOSSIL)
- ezoensis, Phylloceras ezoensis Yokoyama, 1890 † - syn of: Phyllopachyceras forbesianum (A.V.M.D. D'Orbigny, 1850 †) - (PHYLLOCERATIDAE) (FOSSIL)
- ezoensis, Vesicomya ezoensis J. Yokoyama, 1890 - (VESICOMYIDAE)
- Ezohelix, syn of: Genus Bradybaena H.H. Beck, 1837 (BRADYBAENIDAE)
- Ezolittorina, syn of: Genus Littorina A.E.J. Férussac, 1822 (LITTORINIDAE)
- ezonis, Mya ezonis (Kuroda & T. Habe †) - (MYIDAE) (FOSSIL)
- ezonis, Nuttallia ezonis J.T. Kuroda & T. Habe in T. Habe, 1955 - (PSAMMOBIIDAE)
- ezonis, Unio ezonis J.T. Kuroda, 1950 - syn of: Nodularia douglasiae (J.E. Gray in E. Griffith & E. Pidgeon, 1834) - (UNIONIDAE)
- Ezonuculana, Genus Ezonuculana Nagao, 1938 † (NUCULANIDAE) (FOSSIL)
- ezquerrae, Tancrediopsis ezquerrae (Sharpe, 1853 †) - (CTENODONTIDAE) (FOSSIL)
- ezquerrae, Ctenodonta ezquerrae Sharpe, 1853 † - syn of: Tancrediopsis ezquerrae (Sharpe, 1853 †) - (CTENODONTIDAE) (FOSSIL)
- ezquerrae, Nucula ezquerrae Sharpe, 1853 † - syn of: Tancrediopsis ezquerrae (Sharpe, 1853 †) - (NUCULIDAE) (FOSSIL)
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