- kis, Pisinna kis (R. Winckworth, 1931) - (ANABATHRIDAE)
- kisalensis, Gabbiella kisalensis (H.A. Pilsbry & C.E. Beecher, 1927) - (BITHYNIIDAE)
- kisangani, Melanoides kisangani H.A. Pilsbry & C.E. Beecher, 1927 - (THIARIDAE)
- kiselevae, Cyclolobus kiselevae Zakharov, 1983 † - (CYCLOLOBIDAE) (FOSSIL)
- kiseljaki, Valenciennius kiseljaki (Gorjanovic-Kramberger, 1901 †) - (LYMNAEIDAE) (FOSSIL)
- kishiiana, Akiyoshia kishiiana J.T. Kuroda, T. Habe & Tamu, 1958 - (HYDROBIIDAE)
- kishimaensis, Creseis kishimaensis Y. Ando, 2011 † - (CRESEIDAE) (FOSSIL)
- Kishinewia, Genus Kishinewia (ARCHAEOGASTROPODA (unassigned)) (FOSSIL)
- kisnyergesarokensis, Callomoniceras kisnyergesarokensis (Geczy & Meister, 2007 †) - (EODEROCERATIDAE) (FOSSIL)
- kisonis, Unio kisonis W. Kobelt & H. Rolle, 1895 - syn of: Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- kissdalmae, Hauffenia kissdalmae Z. Eröss & E. Petró, 2008 - (HYDROBIIDAE)
- kissensis, Amphidromus laevus kissensis H. Rolle, 1903 - (CAMAENIDAE)
- kissimmeensis, Pyrazisinus kissimmeensis (A.A. Olsson, 1967 †) - (BATILLARIIDAE) (FOSSIL)
- kissimmeensis, Ptychosalpinx kissimmeensis E.J. Petuch, 1994 † - (BUCCINIDAE) (FOSSIL)
- kissimmeensis, Brachysycon kissimmeensis (E.J. Petuch, 1994 †) - (BUSYCONIDAE) (FOSSIL)
- kissimmeensis, Ventrilia kissimmeensis E.J. Petuch, 1994 † - syn of: Ventrilia rucksorum E.J. Petuch, 1994 † - (CANCELLARIIDAE) (FOSSIL)
- kissimmeensis, Siphocypraea kissimmeensis E.J. Petuch, 1994 † - (CYPRAEIDAE) (FOSSIL)
- kissimmeensis, Terebraspira kissimmeensis E.J. Petuch, 1994 † - (FASCIOLARIIDAE) (FOSSIL)
- kissimmeensis, Tropochasca kissimmeensis E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- kissimmeensis, Trossulasalpinx kissimmeensis E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- kissimmeensis, Eupleura kissimmeensis E.J. Petuch, 1994 † - (MURICIDAE) (FOSSIL)
- kissimmeensis, Pleioptygma kissimmeensis E.J. Petuch, 1994 † - (PLEIOPTYGMATIDAE) (FOSSIL)
- kisslingi, Harpoceras kisslingi Hug, 1898 † - (HILDOCERATIDAE) (FOSSIL)
- Kisslingia, Genus Kisslingia P. Bartsch, 1946 (POMATIIDAE)
- kissoumi, Panopea kissoumi McLearn, 1945 † - (HIATELLIDAE) (FOSSIL)
- kissoumi, Thracia kissoumi McLearn, 1933 † - (THRACIIDAE) (FOSSIL)
- kissoumi, Yoldia kissoumi McLearn, 1933 † - (YOLDIIDAE) (FOSSIL)
- Kistasella, Genus Kistasella Missarzhevsky, 1989 (ONYCHOCHILIDAE) (FOSSIL)
- Kistinaia, Subgenus Coelatura (Kistinaia) Haas, 1936 (UNIONIDAE)
- kisumiensis, Gyraulus kisumiensis H.B. Preston, 1912 - (PLANORBIDAE)
- kitae, Goniobranchus kitae (T.M. Gosliner, 1994) - (CHROMODORIDIDAE)
- kitaiwojimana, Lamprocystis hahajimana kitaiwojimana H.A. Pilsbry & Y. Hirase, 1905 - (EUCONULIDAE)
- kitaiwojimanum, Elasmias kitaiwojimanum (H.A. Pilsbry & Y. Hirase, 1903) - (ACHATINELLIDAE)
- kitakamiense, Tainoceras kitakamiense I. Hayasaka, 1962 † - (TAINOCERATIDAE) (FOSSIL)
- kitakamiensis, Annuliconcha kitakamiensis Murata, 1964 † - (ANNULICONCHIDAE) (FOSSIL)
- kitakamiensis, Euphemitopsis kitakamiensis Murata, 1969 † - (EUPHEMITIDAE) (FOSSIL)
- kitakamiensis, Neogeoceras kitakamiensis Bando & Ehiro, 1985 † - (MEDLICOTTIIDAE) (FOSSIL)
- kitakamiensis, Neoschizodus kitakamiensis Nakazawa & Newell, 1968 † - (MYOPHORIIDAE) (FOSSIL)
- Kitakamispira, syn of: Genus Kitikamispira Kase & Nishida, 1988 (EUOMPHALOIDEA (unassigned)) (FOSSIL)
- kitamiensis, Mizuhopecten kitamiensis Satoru & al., 1966 † - (PECTINIDAE) (FOSSIL)
- kitamurai, Oistotrigonia kitamurai Tashiro, 1988 † - (PTEROTRIGONIIDAE) (FOSSIL)
- kitanagato, Eatonina kitanagato H. Fukuda, A. Nakamura & H. Yamashita, 1998 - (CINGULOPSIDAE)
- Kitatites, Genus Kitatites Zhuravleva, 1972 (DISCOSORIDA (unassigned)) (FOSSIL)
- kitcheni, Etrema kitcheni C.F. Laseron, 1954 - (CLATHURELLIDAE)
- kitcheni, Turbonilla kitcheni (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- kitcheni attenuata, Etrema kitcheni attenuata C.F. Laseron, 1954 - (CLATHURELLIDAE)
- kitchingi, Anachis kraussii kitchingi (G.B. III Sowerby, 1844) - (COLUMBELLIDAE)
- Kitchingonia, Genus Kitchingonia M.R. Cooper, 2016 (TRIGONIIDAE) (FOSSIL)
- kitchini, Amoebites kitchini (Salfeld, 1915 †) - (CARDIOCERATIDAE) (FOSSIL)
- kitchini, Sonneratia kitchini Spath, 1925 † - (HOPLITIDAE) (FOSSIL)
- kitchini, Rinetrigonia kitchini (Rudra & Bardhan, 2006 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- kitchini, Homoceratoides kitchini Bisat, 1930 † - (RAMOSITIDAE) (FOSSIL)
- kitchini, Tetragonites kitchini Krenkel 1910 † - (TETRAGONITIDAE) (FOSSIL)
- kitchini, Trigonia kitchini Stoyanow, 1949 † - (TRIGONIIDAE) (FOSSIL)
- kitchini chalensis, Sonneratia kitchini chalensis T.L. Casey † - (HOPLITIDAE) (FOSSIL)
- kitchini ovalis, Sonneratia kitchini ovalis T.L. Casey † - (HOPLITIDAE) (FOSSIL)
- Kitchinites, Genus Kitchinites Spath , 1922 (DESMOCERATIDAE) (FOSSIL)
- Kitikamispira, Genus Kitikamispira Kase & Nishida, 1988 (EUOMPHALOIDEA (unassigned)) (FOSSIL)
- kitsoni, Gibberula kitsoni (A.C. Chapman, 1921) - (CYSTISCIDAE)
- kitsoni, Pseudoliva kitsoni R.B. Newton, 1922 † - (PSEUDOLIVIDAE) (FOSSIL)
- kitsoni, Callista kitsoni R.B. Newton, 1922 † - (VENERIDAE) (FOSSIL)
- Kitsonia, Genus Kitsonia Eames, 1957 (CARDIIDA (unassigned)) (FOSSIL)
- kitteli, Plectostoma kitteli (W.J.M. Maassen, 2002) - (DIPLOMMATINIDAE)
- kitteli, Emarginula kitteli Dreger, 1892 † - (FISSURELLIDAE) (FOSSIL)
- kitteli, Geotrochus kitteli J.J. Vermeulen, T.S. Liew & M. Schilthuizen, 2015 - (HELICARIONIDAE)
- kitteli, Paraboysidia kitteli W.J.M. Maassen, 1999 - (HYPSELOSTOMATIDAE)
- kitteredgei, Ximeniconus kitteredgei (C.J. Maury, 1917 †) - (CONIDAE) (FOSSIL)
- kittli, Paratirolites kittli Stoyanow, 1910 † - (DZHULFITIDAE) (FOSSIL)
- kittli, Paraturbo kittli Kutassy, 1937 † - (PARATURBINIDAE) (FOSSIL)
- kittli, Mioplatytaphius kittli (Rzehak, 1893 †) - (PLANORBIDAE) (FOSSIL)
- kittli, Lamellox kittli A. Nützel, 2007 † - (PROTORCULIDAE) (FOSSIL)
- Kittlia, syn of: Genus Ptychostoma Tyzzer, 1930 (PROSTYLIFERIDAE) (FOSSIL)
- Kittliconcha, Genus Kittliconcha Bonarelli, 1927 (SETTSASSIIDAE) (FOSSIL)
- KITTLIDISCIDAE Cox, 1960 - Family (GASTROPODA-VETIGASTROPODA) (FOSSIL)
- Kittlidiscus, Genus Kittlidiscus Haas, 1953 (KITTLIDISCIDAE) (FOSSIL)
- Kittlistylus, Genus Kittlistylus Haas , 1953 (EULIMIDAE) (FOSSIL)
- Kittlitrochus, Genus Kittlitrochus Bφhm, 1895 (PLEUROCERIIDAE) (FOSSIL)
- kiuchii, Cipangocharax kiuchii H. Minato & J.M. Abe, 1982 - (CYCLOPHORIDAE)
- kiusiuensis, Bithynia kiusiuensis Y. Hirase, 1927 - (BITHYNIIDAE)
- kiusiuensis, Aegista kiusiuensis H.A. Pilsbry, 1900 - (BRADYBAENIDAE)
- kiusiuensis, Donax kiusiuensis (H.A. Pilsbry, 1901) - (DONACIDAE)
- kiusiuensis, Tentidonax kiusiuensis H.A. Pilsbry, 1901 - syn of: Donax kiusiuensis (H.A. Pilsbry, 1901) - (DONACIDAE)
- kiusiuensis, Truncatella kiusiuensis H.A. Pilsbry, 1902 - syn of: Truncatella pfeifferi E.C. Von Martens, 1860 - (TRUNCATELLIDAE)
- kiusiuensis oshimana, Aegista kiusiuensis oshimana H.A. Pilsbry & Y. Hirase, 1903 - (BRADYBAENIDAE)
- kiusiuensis tokunovaga, Aegista kiusiuensis tokunovaga H.A. Pilsbry & Y. Hirase, 1905 - (BRADYBAENIDAE)
- kivi, Serpho kivi (J.E. Gray, 1843) - (CHAROPIDAE)
- Kiviasukkaan, syn of: Genus Loxoplocus Fischer, 1885 (LOPHOSPIRIDAE) (FOSSIL)
- kivitalonae, Tritonophon kivitalonae Peel, 1974 † - (PLECTONOTIDAE) (FOSSIL)
- kivuensis, Gabbiella humerosa kivuensis (E.C. Von Martens, 1879) - (BITHYNIIDAE)
- kivuensis, Cerastus kivuensis H.B. Preston, 1913 - syn of: Kempioconcha kivuensis (H.B. Preston, 1913) - (CERASTUIDAE)
- kivuensis, Tomichia kivuensis G. Mandahl-Barth, 1974 - (POMATIOPSIDAE)
- kivuensis, Kempioconcha kivuensis (H.B. Preston, 1913) - (SUBULINIDAE)
- kivuensis, Zonitarion kivuensis K.H.J. Thiele, 1911 - (UROCYCLIDAE)
- kivuensis, Verrucarion kivuensis G.A. de Mol, 1970 - (UROCYCLIDAE)
- kiwaensis, Veprichlamys kiwaensis Powell, 1939 - (PECTINIDAE)
- kiwawaensis, Myophorella kiwawaensis Cox, 1965 † - (MYOPHORELLIDAE) (FOSSIL)
- kiwi, Exilia kiwi Y.I. Kantor & P. Bouchet, 2001 - (PTYCHATRACTIDAE)
- kiwi, Euprotomus kiwi L. Bozzetti & D.M. Sargent, 2011 - (STROMBIDAE)
- kiyohimae, Epitonium kiyohimae T. Nakayama, 2000 - (EPITONIIDAE)
- kiyokoae, Kondoraphe kiyokoae W.J. Clench, 1940 - (NEOCYCLOTIDAE)
- kiyonoi, Trisidos kiyonoi (J. Makiyama, 1931) - (ARCIDAE)
- kiyonoi, Arca kiyonoi J. Makiyama, 1931 - syn of: Trisidos kiyonoi (J. Makiyama, 1931) - (ARCIDAE)
- kiyosumiensis, Nipponochloritis oscitans kiyosumiensis M. Azuma, 1982 - (CAMAENIDAE)
- kizakiensis, Odostomia kizakiensis M. Yokoyama, 1922 - (PYRAMIDELLIDAE)
- kizakikoensis, Valvata kizakikoensis T. Fujita & T. Habe, 1991 - syn of: Cincinna chishimana L.A. Prozorova & Y.I. Starobogatov, 1999 - (VALVATIDAE)
- kizildagensis, Metafruticicola kizildagensis B.A. Gümüs & E. Neubert, 2012 - (HYGROMIIDAE)
- kizinga, Marconia kizinga P. Tattersfield, 1999 - (STREPTAXIDAE)
- kjaerulfi, Holmiceras kjaerulfi (Brogger, 1882 †) - (LITUITIDAE) (FOSSIL)
- kjaerulfi, Tyrioceras kjaerulfi E. Strand, 1934 † - (SINOCERATIDAE) (FOSSIL)
- kjellerupi, Sarasinula kjellerupi C.G. Semper, 1885 - syn of: Sarasinula linguaeformis (C.G. Semper, 1885) - (VERONICELLIDAE)
- kjennerudae, Buccinum kjennerudae P. Bouchet & A. Warén, 1985 - (BUCCINIDAE)
- kjerulfi, Eotomaria kjerulfi E.F.R.K. Koken & J. Perner, 1925 † - (EOTOMARIIDAE) (FOSSIL)
- kjerulfi, Cyclolituites kjerulfi Sweet, 1958 † - (LITUITIDAE) (FOSSIL)
- kjerulfi, Holmiceras kjerulfi (Brogger, 1882 †) - (LITUITIDAE) (FOSSIL)
- kjerulfi, Tyrioceras kjerulfi E. Strand, 1934 † - syn of: Tyrioceras kjaerulfi E. Strand, 1934 † - (SINOCERATIDAE) (FOSSIL)
- Kjerulfonema, syn of: Genus Rhabdostropha Donald, 1905 (LOXONEMATIDAE) (FOSSIL)
- kjoeriana, Corbula kjoeriana C.B. Adams, 1852 - syn of: Caryocorbula swiftiana (C.B. Adams, 1852) - (CORBULIDAE)
- klaarwateri, Megalacron klaarwateri (B. Rensch, 1931) - (CAMAENIDAE)
- Kladisoceras, Genus Kladisoceras (DISCOSORIDA (unassigned)) (FOSSIL)
- klagenfurtensis, Belgrandiella klagenfurtensis M. Haase, 1994 - (HYDROBIIDAE)
- klaici, Gyromelania klaici (. Brusina, 1897 †) - (HYDROBIIDAE) (FOSSIL)
- klaici, Lymnaea klaici . Brusina, 1884 † - (LYMNAEIDAE) (FOSSIL)
- klamathense, Choristoceras klamathense Smith, 1927 † - (CHORISTOCERATIDAE) (FOSSIL)
- klamathensis, Worthenia klamathensis Smith, 1927 † - (LOPHOSPIRIDAE) (FOSSIL)
- klamathensis, Lanx klamathensis H.B. Hannibal, 1912 - (LYMNAEIDAE)
- klamathensis, Maclurites klamathensis Rohr, 1980 † - (MACLURITIDAE) (FOSSIL)
- klamathensis, Vorticifex effusa klamathensis H.B. Baker, 1945 - (PLANORBIDAE)
- klamathensis, Otoscaphites klamathensis Anderson, 1902 † - (SCAPHITIDAE) (FOSSIL)
- klamathensis, Fagesia klamathensis Anderson, 1958 † - (VASCOCERATIDAE) (FOSSIL)
- klamathensis sinitsini, Parapholyx klamathensis sinitsini H.B. Baker, 1945 - syn of: Vorticifex effusa sinitsini H.B. Baker, 1945 - (PLANORBIDAE)
- klamathicus, Vespericola klamathicus B. Roth & W.B. Miller, 1995 - (POLYGYRIDAE)
- Klamathites, Genus Klamathites Smith , 1927 (KLAMATHITIDAE) (FOSSIL)
- KLAMATHITIDAE Tozer, 1994 - Family (CEPHALOPODA-AMMONOIDEA-CERATITIDA) (FOSSIL)
- klamathonis, Nowakites klamathonis Anderson, 1958 † - (PACHYDISCIDAE) (FOSSIL)
- klappenbachi, Trichohelicina klappenbachi W.K. Weyrauch, 1966 - (HELICINIDAE)
- klappenbachi, Megalobulimus klappenbachi J.L.M. Leme, 1954 - (MEGALOBULIMIDAE)
- klappenbachi, Olivella klappenbachi R.S. Absalão & A. Pimenta, 2003 - (OLIVELLIDAE)
- klappenbachi, Eupera klappenbachi M.C.D. Mansur & I.L. Veitenheimer-Mendes, 1975 - (SPHAERIIDAE)
- klapperi, Eoangyomphalus klapperi Blodgett & Johnson, 1992 † - (GOSSELETINIDAE) (FOSSIL)
- klaptoczi, Barcania klaptoczi (R. Sturany, 1908) - (CLAUSILIIDAE)
- klaptoczi, Cernuella klaptoczi R. Sturany - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- klaptoczi cristata, Barcania klaptoczi cristata R.A.M. Brandt, 1958 - (CLAUSILIIDAE)
- klaptoczi gahhami, Barcania klaptoczi gahhami R.A.M. Brandt, 1956 - (CLAUSILIIDAE)
- klaptoczi gambettae, Barcania klaptoczi gambettae R.A.M. Brandt, 1956 - (CLAUSILIIDAE)
- klaptoczi nagaensis, Barcania klaptoczi nagaensis R.A.M. Brandt, 1956 - (CLAUSILIIDAE)
- klasmidia, Agathotoma klasmidia D.R. Shasky, 1971 - (MANGELIIDAE)
- Klattea, syn of: Genus Parachondria W.H. Dall, 1905 (POMATIIDAE)
- klatteanus, Figuladra challisi klatteanus (J.C. Cox, 1873) - (CAMAENIDAE)
- klatteanus, Macroceramus klatteanus (T.B. Bland, 1875) - (UROCOPTIDAE)
- klausgrohi, Onoba klausgrohi W. Engl, 2011 - (RISSOIDAE)
- klebelsbergi, Nautilus klebelsbergi von Loesch, 1914 † - syn of: Pseudaganides klebelsbergi (von Loesch, 1914 †) - (NAUTILIDAE) (FOSSIL)
- klebelsbergi, Pseudaganides klebelsbergi (von Loesch, 1914 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- Klebyella, Genus Klebyella Grόndel, 1998 (CHAROPIDAE) (FOSSIL)
- klecaki, Anodonta klecaki J.R. Bourguignat, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- klecakiana, Horatia klecakiana J.R. Bourguignat - (HYDROBIIDAE)
- kleciachi, Liburnica kleciachi (L. Pfeiffer, 1870) - (HELICIDAE)
- kleciachi, Lamellaria kleciachi . Brusina, 1866 - syn of: Berthella plumula (G. Montagu, 1803) - (VELUTINIDAE)
- kleciaki, Cochlostoma kleciaki (A. Braun, 1887) - (COCHLOSTOMATIDAE)
- kleciaki, Anodonta kleciaki H. Drouët, 1881 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- kleciaki arnautorum, Cochlostoma kleciaki arnautorum (A.J. Wagner, 1906) - (COCHLOSTOMATIDAE)
- kleckhamae, Barneystrombus kleckhamae (W.O. Cernohorsky, 1971) - (STROMBIDAE)
- kleckhamae boholensis, Barneystrombus kleckhamae boholensis H. Mühlhäusser, 1981 - syn of: Barneystrombus boholensis (H. Mühlhäusser, 1981) - (STROMBIDAE)
- kleemanni, Botula kleemanni P.H. Valentich-Scott, 2008 - (MYTILIDAE)
- kleemanni, Adula kleemanni M. Huber, 2010 - (MYTILIDAE)
- kleihegei, Domatoceras kleihegei A.K. Miller, J.H. Lane & A.G. Unklesbay, 1932 † - (GRYPOCERATIDAE) (FOSSIL)
- Kleinacteon, Genus Kleinacteon Vokes, 1939 (CEPHALASPIDA (unassigned)) (FOSSIL)
- Kleinella, Genus Kleinella A. Adams, 1860 (PYRAMIDELLIDAE)
- kleinerae, Acutimitoceras kleinerae W. Korn, 1984 † - (GATTENDORFIIDAE) (FOSSIL)
- kleini, Duyeina kleini J.J. Vermeulen, 2005 † - (ANAHAMULINIDAE) (FOSSIL)
- kleini, Eotomaria kleini (Beushausen, 1884 †) - (EOTOMARIIDAE) (FOSSIL)
- kleini, Triptychia kleini Schnabel, 2006 † - (FILHOLIIDAE) (FOSSIL)
- kleini, Hegaratella kleini Hoedemaeker, 2016 † - (NEOCOMITIDAE) (FOSSIL)
- kleini, Gyraulus kleini (F. Gottschick & W.A. Wenz, 1916 †) - (PLANORBIDAE) (FOSSIL)
- kleiniana, Quincuncina kleiniana I. Lea, 1832 - syn of: Amphinaias infucata (T.A. Conrad, 1834) - (UNIONIDAE)
- kleinii, Melanopsis kleinii Kurr, 1856 † - (MELANOPSIDAE) (FOSSIL)
- kleinii valentinensis, Melanopsis kleinii valentinensis C.F. Fontannes, 1881 † - (MELANOPSIDAE) (FOSSIL)
- kleinoichingensis, Otomphalus kleinoichingensis F. Traub, 1979 † - (PLEUROCERIIDAE) (FOSSIL)
- kleinrosa, Miraclathurella kleinrosa G.W. Nowell-Usticke, 1969 - (PSEUDOMELATOMIDAE)
- kleinzellensis, Iglica kleinzellensis P.L. Reischütz, 1981 - (HYDROBIIDAE)
- kleistos, Nonorios kleistos Ebbestad & al., 2008 † - (PLATYCERATIDAE) (FOSSIL)
- Kleistoxyites, Genus Kleistoxyites Buckman, 1922 (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- Kleistoxynoticeras, syn of: Genus Radstockiceras D'Orbigny, 1844 (OXYNOTICERATIDAE) (FOSSIL)
- klemae, Klemaeconus klemae (B.C. Cotton, 1953) - (CONIDAE)
- Klemaeconus, Genus Klemaeconus J.K. Tucker & M.J. Tenorio, 2013 (CONIDAE)
- Klematosphinctes, Genus Klematosphinctes Buckman, 1922 (AMMONOIDEA (unassigned)) (FOSSIL)
- klemi, Callochiton klemi E.A. Ashby, 1926 - (CALLOCHITONIDAE)
- klemioides, Callochiton klemioides E.H.J. Leloup, 1937 - (CALLOCHITONIDAE)
- klemmantanica, Everettia klemmantanica G.P.L.K. Gude, 1918 - (DYAKIIDAE)
- klemmi, Agriolimax klemmi A.V. Grossu, 1972 - (AGRIOLIMACIDAE)
- klemmi, Chondrina klemmi C. Altimira, 1961 - syn of: Chondrina farinesii C. des Moulins, 1835 - (CHONDRINIDAE)
- klemmi, Albinaria klemmi O.E. Paget, 1971 - (CLAUSILIIDAE)
- klemmi, Strobeliella brembina klemmi (H. Nordsieck, 1966) - (CLAUSILIIDAE)
- klemmi, Medora stenostoma klemmi H. Nordsieck, 1970 - (CLAUSILIIDAE)
- klemmi, Strobeliella whateliana klemmi (H. Nordsieck, 1966) - (CLAUSILIIDAE)
- klemmi, Albinaria inchoata klemmi (O. Böttger, 1889) - (CLAUSILIIDAE)
- klemmi, Herilla ziegleri klemmi H. Nordsieck, 1971 - (CLAUSILIIDAE)
- klemmi, Montenegrina fuchsi klemmi R.A.M. Brandt, 1962 - (CLAUSILIIDAE)
- klemmi, Nematurella klemmi W.R. Schlickum, 1964 † - (HYDROBIIDAE) (FOSSIL)
- klemmi, Bythiospeum klemmi (H.D. Boeters, 1969) - (HYDROBIIDAE)
- klemmi, Plagigeyeria klemmi H. Schütt, 1961 - (HYDROBIIDAE)
- klemmi, Pagodulina klemmi E. Gittenberger & P. Subai, 1978 - (ORCULIDAE)
- klemmi, Sphyradium doliolum klemmi C. Altimira, 1959 - (ORCULIDAE)
- klemmi, Vitrea klemmi I. Pintér, 1972 - (PRISTILOMATIDAE)
- klemmi, Valvata klemmi H. Schütt, 1962 - (VALVATIDAE)
- klemmi, Truncatellina klemmi A. Zilch, 1960 - (VERTIGINIDAE)
- Klemmia, Genus Klemmia E. Gittenberger, 1969 (SPELAEODISCIDAE)
- klenei, Monoplex klenei (G.B. III Sowerby, 1889) - (RANELLIDAE)
- klenei, Cymatium klenei G.B. III Sowerby, 1889 - syn of: Monoplex klenei (G.B. III Sowerby, 1889) - (RANELLIDAE)
- Kleokyphus, Genus Kleokyphus G.A. Solem, 1976 (ENDODONTIDAE)
- kleppi, Calliostoma kleppi C. Nielsen & al., 2004 † - (CALLIOSTOMATIDAE) (FOSSIL)
- klepton pseudodesjardini, Marginella klepton pseudodesjardini F. Mattavelli, 2011 - syn of: Marginella pseudodesjardini R. Le Béon, 2012 - (MARGINELLIDAE)
- kleptuzica, Bythinella kleptuzica P. Glöer & D.G. Georgiev, 2011 - (BYTHINELLIDAE)
- klerici, Melanopsis klerici . Brusina, 1893 † - (MELANOPSIDAE) (FOSSIL)
- kletti, Pseudanodonta kletti E.A. Rossmässler, 1835 - syn of: Pseudanodonta complanata (E.A. Rossmässler, 1835) - (UNIONIDAE)
- kletzi, Aphanaia kletzi Biakov, 2015 † - (ATOMODESMATIDAE) (FOSSIL)
- klietmanni, Cyclothyrella klietmanni (T.A. Neubauer in T.A. Neubauer & al., 2011 †) - (HYDROBIIDAE) (FOSSIL)
- klikai, Canalicia klikai (J.F. Babor, 1897 †) - (CLAUSILIIDAE) (FOSSIL)
- Klikia, Genus Klikia Pilsbry, 1895 (HELICIDAE) (FOSSIL)
- klimakomphalum, Pseudaptetoceras klimakomphalum (Vacek, 1886 †) - (HAMMATOCERATIDAE) (FOSSIL)
- klimakomphalum discoidale, Pseudaptetoceras klimakomphalum discoidale Westermann, 1969 † - (HAMMATOCERATIDAE) (FOSSIL)
- klimakota, Mangelia klimakota J. Gardner, 1937 † - (MANGELIIDAE) (FOSSIL)
- klimovi, Metalegoceras klimovi Ruzhentsev, 1956 † - (METALEGOCERATIDAE) (FOSSIL)
- klineae, Cerion klineae W.J. Clench, 1961 - (CERIONIDAE)
- klineorum, Canarium klineorum R.T. Abbott, 1960 - (STROMBIDAE)
- klingeri, Idanoceras klingeri Henderson & McKenzie, 2002 † - (LABECERATIDAE) (FOSSIL)
- klinghardti, Sabinia klinghardti Boehm, 1927 † - syn of: Pseudosabinia klinghardti (Boehm, 1927 †) - (HIPPURITIDA (unassigned)) (FOSSIL)
- klinghardti, Pseudosabinia klinghardti (Boehm, 1927 †) - (RADIOLITIDAE) (FOSSIL)
- klinghardti, Streptosiphon klinghardti Bohm, 1926 † - (TURBINELLIDAE) (FOSSIL)
- Klinghardtites, Genus Klinghardtites Lupu, 1971 (HIPPURITIDA (unassigned)) (FOSSIL)
- kliniensis, Cincinna kliniensis (K.O. Milaschewitsch, 1881) - (VALVATIDAE)
- klinti, Astarte klinti G. Høpner Petersen, 2001 - syn of: Astarte montagui (L.W. Dillwyn, 1817) - (ASTARTIDAE)
- klipparti, Soleniscus klipparti F.B. Meek, 1871 † - (SOLENISCIDAE) (FOSSIL)
- klipparti, Sphaerodoma klipparti Morningstar, 1922 † - (SPHAERODOMIDAE) (FOSSIL)
- klippsteinii, Lentipleura klippsteinii (G.A. Goldfuss, 1844 †) - (GOSSELETINIDAE) (FOSSIL)
- klipsteini, Arcestes klipsteini Mojsisovics, 1875 † - syn of: Joannites joannisaustriae (Klipstein, 1843 †) - (ARCESTIDAE) (FOSSIL)
- klipsteini, Cerithium klipsteini O.G. Michelotti, 1847 † - syn of: Gourmya tuberosa (J.P.S. Grateloup, 1847 †) - (CERITHIIDAE) (FOSSIL)
- klipsteini, Barrancyloceras klipsteini (Uhlig, 1888 †) - (CRIOCERATITIDAE) (FOSSIL)
- klipsteini, Dentalium klipsteini E.A.L. Kittl, 1891 † - (DENTALIIDAE) (FOSSIL)
- klipsteini, Joannites klipsteini (Mojsisovics, 1875 †) - (JOANNITIDAE) (FOSSIL)
- klipsteini, Lima klipsteini A.E.M. Cossmann & A. Lambert, 1884 † - (LIMIDAE) (FOSSIL)
- klipsteini, Litiopa klipsteini A.E.M. Cossmann, 1882 † - (LITIOPIDAE) (FOSSIL)
- klipsteini, Trematodiscus klipsteini Mojsisovics, 1882 † - (NAUTILIDA (unassigned)) (FOSSIL)
- klipsteini, Nautilus klipsteini Mojsisovics, 1882 † - syn of: Germanonautilus klipsteini (Mojsisovics, 1882 †) - (NAUTILIDAE) (FOSSIL)
- klipsteini, Kokenella klipsteini E.A.L. Kittl, 1891 † - (PORCELLIIDAE) (FOSSIL)
- klipsteini, Germanonautilus klipsteini (Mojsisovics, 1882 †) - (TAINOCERATIDAE) (FOSSIL)
- Klipsteinia, Genus Klipsteinia Mojsisovics , 1892 (ARPADITIDAE) (FOSSIL)
- klishevichi, Paranowakia klishevichi Alberti, 1993 † - (PARANOWAKIIDAE) (FOSSIL)
- klissurica, Ena monticola klissurica R.A. Bank & H.P.M.G. Menkhorst, 1992 - (ENIDAE)
- klitschi, Pugnellus klitschi S. Kiel & K. Bandel, 1999 † - (PUGNELLIDAE) (FOSSIL)
- kljasmensis, Amaurotoma kljasmensis V.N. Sinelnikova, 1970 † - (MICRODOMATIDAE) (FOSSIL)
- kljasmiensis, Falsataphrus kljasmiensis (Gerasimov, 1992 †) - (ATAPHRIDAE) (FOSSIL)
- kljasmiensis, Novlepatella kljasmiensis Y.I. Starobogatov & Mazaev, 1999 † - (DAMILINIDAE) (FOSSIL)
- klobukowskii, Discotropis klobukowskii (Mansuy, 1912 †) - (EUOMPHALIDAE) (FOSSIL)
- klongsangensis, Plectostoma klongsangensis (S. Panha, 1997) - (DIPLOMMATINIDAE)
- klongsangensis, Opisthostoma klongsangensis S. Panha, 1997 - syn of: Plectostoma klongsangensis (S. Panha, 1997) - (DIPLOMMATINIDAE)
- kloosi, Paolaura kloosi L. Bozzetti, 2009 - (MARGINELLIDAE)
- klostermanni, Coralliophila klostermanni Wienrich, 2001 † - (MURICIDAE) (FOSSIL)
- klouceki, Cymbularia klouceki Horný, 1997 † - (BELLEROPHONTIDAE) (FOSSIL)
- klucharevae, Acroloxus klucharevae N.D. Kruglov & Y.I. Starobogatov, 1991 - (ACROLOXIDAE)
- klucharevae, Casertiana klucharevae Y.I. Starobogatov & L.L. Budnikova, 1985 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- klucharevae, Cincinna klucharevae Y.I. Starobogatov in Y.I. Starobogatov & F. Zatrawkin, 1985 - (VALVATIDAE)
- klugi, Barcania klugi R.A.M. Brandt, 1956 - (CLAUSILIIDAE)
- klugi, Itimaspira klugi Heidelberger & al., 2009 † - (LOPHOSPIRIDAE) (FOSSIL)
- klugi, Hemiprionites klugi Brayard & Bucher, 2008 † - (PRIONITIDAE) (FOSSIL)
- klugi streyi, Barcania klugi streyi R.A.M. Brandt, 1958 - (CLAUSILIIDAE)
- Klugites, Genus Klugites Becker, 2015 (MIMOCERATIDAE) (FOSSIL)
- klunzingeri, Epitonium klunzingeri (S. Clessin, 1897) - (EPITONIIDAE)
- klunzingeri, Gastrocopta klunzingeri (C.F. Jickeli, 1873) - (VERTIGINIDAE)
- kluthi, Crassispira kluthi H.K. Jordan, 1936 - (PSEUDOMELATOMIDAE)
- klyazmaensis, Stegocoelia klyazmaensis Mazaev, 2001 † - (GONIASMATIDAE) (FOSSIL)
- klytios, Vexillum klytios H. Turner, 2008 - (COSTELLARIIDAE)
- kmagha, Turbonilla kmagha A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- kmeriana, Paludina kmeriana (L.J. Morlet, 1890) - (VIVIPARIDAE)
- kmeriana, Paludina kmeriana P.M.A. Morelet, 1890 - syn of: Paludina kmeriana (L.J. Morlet, 1890) - (VIVIPARIDAE)
- kmeriana, Mekongia swainsoni kmeriana (G. von dem Busch, 1844) - (VIVIPARIDAE)
- knaeckei, Redstonia knaeckei Rogalla & Amler, 2006 † - (PSEUDOBIGALEAIDAE) (FOSSIL)
- knappi, Mytilarca knappi J.W. Hall, 1884 † - (AMBONYCHIIDAE) (FOSSIL)
- knappi, Winchelloceras knappi Work & Mason, 2004 † - (GIRTYOCERATIDAE) (FOSSIL)
- knappiana, Rimella knappiana C.J. Maury, 1912 † - (RIMELLIDAE) (FOSSIL)
- knappianum, Ptychodesma knappianum J.W. Hall † - (CYRTODONTIDAE) (FOSSIL)
- knechti, Extranodites knechti Jeannet, 1951 † - (ASPIDOCERATIDAE) (FOSSIL)
- knechti, Dieneroceras knechti A. Hyatt & Smith, 1905 † - syn of: Dieneroceras dieneri (A. Hyatt & Smith, 1905 †) - (COLUMBITIDAE) (FOSSIL)
- knechti, Lecanites knechti A. Hyatt & Smith, 1905 † - syn of: Dieneroceras dieneri (A. Hyatt & Smith, 1905 †) - (LECANITIDAE) (FOSSIL)
- knechti, Subbonarellia knechti Jeannet, 1951 † - (OPPELIIDAE) (FOSSIL)
- Knefastia, Genus Knefastia W.H. Dall, 1919 (PSEUDOMELATOMIDAE)
- Knemiceras, Genus Knemiceras Bφhm , 1898 (KNEMICERATIDAE) (FOSSIL)
- KNEMICERATIDAE Hyatt, 1903 - Family (CEPHALOPODA-AMMONOIDEA-AMMONITIDA) (FOSSIL)
- knidirii, Heideella knidirii M. Ghamizi, 1998 - (HYDROBIIDAE)
- Knightella, Genus Knightella Longstaff, 1933 (ORTHONEMIDAE) (FOSSIL)
- knighteni, Oregoniceras knighteni Anderson 1902 † - syn of: Subprionocyclus neptuni (H.B. Geinitz, 1849 †) - (COLLIGNONICERATIDAE) (FOSSIL)
- knighteni, Schloenbachia knighteni Anderson 1902 † - syn of: Subprionocyclus neptuni (H.B. Geinitz, 1849 †) - (SCHLOENBACHIIDAE) (FOSSIL)
- knighti, Stenothecoides knighti E.L. Yochelson, 1968 † - (CAMBRIDIIDAE) (FOSSIL)
- knighti, Donaldina knighti Erwin, 1988 † - (DONALDINIDAE) (FOSSIL)
- knighti, Endoceras knighti Ulrich & al., 1944 † - (ENDOCERATIDAE) (FOSSIL)
- knighti, Stegocoelia knighti (Licharev, 1975 †) - (GONIASMATIDAE) (FOSSIL)
- knighti, Baylea knighti Weller, 1929 † - (GOSSELETINIDAE) (FOSSIL)
- knighti, Chauliochiton knighti Hoare & Smith, 1984 † - (LEPTOCHITONIDAE) (FOSSIL)
- knighti, Loxonema knighti E.L. Yochelson, 1962 † - syn of: Pseudozygopleura knighti (E.L. Yochelson, 1962 †) - (LOXONEMATIDAE) (FOSSIL)
- knighti, Bamyaniceras knighti (Miller & Furnish, 1940 †) - (MEDLICOTTIIDAE) (FOSSIL)
- knighti, Meekospira knighti Winters, 1963 † - (MEEKOSPIRIDAE) (FOSSIL)
- knighti, Amaurotoma knighti Elias, 1958 † - (MICRODOMATIDAE) (FOSSIL)
- knighti, Orthonema knighti Batten, 1985 † - (ORTHONEMATIDAE) (FOSSIL)
- knighti, Fasciculiconcha knighti Newell, 1938 † - (PECTINIDA (unassigned)) (FOSSIL)
- knighti, Pseudozygopleura knighti (E.L. Yochelson, 1962 †) - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- knighti, Hyphantozyga knighti Hoare & Sturgeon, 1980 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- knighti, Cyclozyga knighti Licharev, 1975 † - syn of: Stegocoelia knighti (Licharev, 1975 †) - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- knighti, Dunbarella knighti Newell, 1938 † - (PTERINOPECTINIDAE) (FOSSIL)
- knighti, Metacoceras knighti Miller & A. Thomas, 1936 † - (TAINOCERATIDAE) (FOSSIL)
- knighti, Retipilina knighti (Horný, 1956 †) - (TRYBLIDIIDAE) (FOSSIL)
- knighti, Tubina knighti Horný, 1992 † - (TUBINIDAE) (FOSSIL)
- knighti, Melo amphora knighti B.D. Jackson, 1954 - (VOLUTIDAE)
- Knightia, syn of: Genus Knightella Longstaff, 1933 (ORTHONEMIDAE) (FOSSIL)
- Knightinella, Genus Knightinella Licharev, 1975 (MICRODOMATIDAE) (FOSSIL)
- Knightites, Genus Knightites Moore, 1941 (KNIGHTITIDAE) (FOSSIL)
- KNIGHTITIDAE Knight, 1956 - Family (GASTROPODA-BELLEROPHONTIDA) (FOSSIL)
- Knightoceras, Genus Knightoceras Miller & Owen, 1934 (KONINCKIOCERATIDAE) (FOSSIL)
- Knightoconus, Genus Knightoconus Yochelson & al., 1973 (HYPSELOCONIDAE) (FOSSIL)
- knikerae, Adkinsia knikerae A.T. Young, 1979 † - (FLICKIIDAE) (FOSSIL)
- knipensis, Cerion uva knipensis F.C. Baker, 1914 - (CERIONIDAE)
- knipovitchi, Filippovia knipovitchi (Y.A. Filippova, 1972) - (ONYCHOTEUTHIDAE)
- knipovitchi, Onykia knipovitchi Y.A. Filippova, 1972 - syn of: Filippovia knipovitchi (Y.A. Filippova, 1972) - (ONYCHOTEUTHIDAE)
- knipowitchi, Caspia knipowitchi M. Makarov, 1938 - (HYDROBIIDAE)
- knipowitschi, Monodacna knipowitschi (B.M. Logvinenko & Y.I. Starobogatov, 1966) - (CARDIIDAE)
- knitteli, Helix knitteli J.R. Bourguignat - syn of: Arianta arbustorum (C. Linnaeus, 1758) - (HELICIDAE)
- knockeri, Acteocina knockeri (E.A. Smith, 1872) - (ACTEOCINIDAE)
- knockeri, Crassatella knockeri E.A. Smith, 1881 - syn of: Crassatina paeteli (H. von Maltzan, 1885) - (CRASSATELLIDAE)
- knockeri, Hastula knockeri (E.A. Smith, 1872) - (TEREBRIDAE)
- knockeri, Protoma knockeri W. Baird, 1870 - (TURRITELLIDAE)
- knodi, Paraprothyris knodi A.H. Clarke, 1913 † - (PHOLADOMYOIDEA (unassigned)) (FOSSIL)
- knopi, Leucotina knopi G.T. Poppe & S.P. Tagaro, 2010 - (AMATHINIDAE)
- knorr, Striopulsellum knorr V. Scarabino & F. Scarabino, 2011 - (PULSELLIDAE)
- knorri, Bulimus knorri L. Pfeiffer in R.A. Philippi, 1846 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri, Neritina pulligera knorri C.A. Récluz, 1841 - (NERITIDAE)
- knorri, Kaneconcha knorri A. Kaim, B.E. Tucholke & A. Warén, 2012 † - (PROVANNIDAE) (FOSSIL)
- knorri guttulatus, Drymaeus knorri guttulatus L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri modesta, Drymaeus knorri modesta L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri percomis, Drymaeus knorri percomis L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri quadrifasciatus, Drymaeus knorri quadrifasciatus L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri sexfasciatus, Drymaeus knorri sexfasciatus L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorri tricolor, Drymaeus knorri tricolor L.W. Schaufuss, 1881 - syn of: Drymaeus trigonostomus (I.H. Jonas, 1844) - (BULIMULIDAE)
- knorrianus, Baculites knorrianus A.G. Desmarest, 1817 † - (BACULITIDAE) (FOSSIL)
- knorrii, Archachatina knorrii (I.H. Jonas, 1839) - (ACHATINIDAE)
- knorrii, Ampullaria knorrii R.A. Philippi, 1852 - syn of: Marisa cornuarietis (C. Linnaeus, 1758) - (AMPULLARIIDAE)
- knorrii, Leucozonia knorrii G.P. Deshayes in G.P. Deshayes & H. Milne-Edwards, 1843 - syn of: Leucozonia nassa (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- knorrii, Terebra knorrii J.E. Gray, 1834 - syn of: Oxymeris chlorata (J.B.P.A. Lamarck, 1822) - (TEREBRIDAE)
- knorrii, Turbinella knorrii G.P. Deshayes, 1843 - syn of: Leucozonia nassa (J.F. Gmelin, 1791) - (TURBINELLIDAE)
- knorrii, Vermicularia knorrii (G.P. Deshayes, 1843) - (TURRITELLIDAE)
- knorrii, Vermetus knorrii G.P. Deshayes, 1843 - syn of: Vermicularia knorrii (G.P. Deshayes, 1843) - (VERMETIDAE)
- Knoutsodonta, Genus Knoutsodonta Hallas & Gosliner, 2015 (ONCHIDORIDIDAE)
- knowltoni, Ficus knowltoni G.B. Campbell, 1961 † - (FICIDAE) (FOSSIL)
- knowltoni, Juvavites knowltoni Smith, 1927 † - (JUVAVITIDAE) (FOSSIL)
- knowltoni, Tancredia knowltoni Stanton, 1899 † - (TANCREDIIDAE) (FOSSIL)
- knoxense, Pseudorthoceras knoxense (McChesney, 1859 †) - (PSEUDORTHOCERATIDAE) (FOSSIL)
- knoxensis, Anguispira knoxensis H.A. Pilsbry, 1899 - (DISCIDAE)
- knoxi, Nototeredo knoxi (P. Bartsch, 1917) - (TEREDINIDAE)
- knoxi, Stiracolpus knoxi J. Marwick, 1957 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- knoxi, Zeacolpus knoxi J. Marwick, 1957 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- knoxi, Alcithoe knoxi (R.K. Dell, 1956) - (VOLUTIDAE)
- knoxi tardior, Stiracolpus knoxi tardior J. Marwick, 1957 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- knoxi tardior, Zeacolpus knoxi tardior J. Marwick, 1957 - syn of: Stiracolpus pagoda (L.A. Reeve, 1849) - (TURRITELLIDAE)
- knoxiana, Juliacorbula knoxiana C.B. Adams, 1852 - syn of: Juliacorbula aequivalvis (R.A. Philippi, 1836) - (CORBULIDAE)
- knoxiana, Corbula knoxiana C.B. Adams, 1852 - syn of: Juliacorbula aequivalvis (R.A. Philippi, 1836) - (CORBULIDAE)
- knoxsense, Pseudorthoceras knoxsense McChesney † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- knoxvillensis, Cylindroteuthis knoxvillensis Anderson, 1945 † - (CYLINDROTEUTHIDIDAE) (FOSSIL)
- knoxvillensis, Lophospira knoxvillensis Ulrich & Scofield, 1897 † - syn of: Trochonemella knoxvillensis (Ulrich & Scofield, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- knoxvillensis, Maclurites knoxvillensis Ulrich & Scofield, 1897 † - (MACLURITIDAE) (FOSSIL)
- knoxvillensis, Lecanospira knoxvillensis Allen & Lester, 1954 † - (OPHILETIDAE) (FOSSIL)
- knoxvillensis, Trochonemella knoxvillensis (Ulrich & Scofield, 1897 †) - (TROCHONEMATIDAE) (FOSSIL)
- knudseni, Achatinella knudseni W. Newcomb - syn of: Kauaia knudseni (D.D. Baldwin, 1895) - (ACHATINELLIDAE)
- knudseni, Kauaia knudseni (D.D. Baldwin, 1895) - (AMASTRIDAE)
- knudseni, Bathyspinula knudseni (Z.A. Filatova, 1976) - (BATHYSPINULIDAE)
- knudseni, Calliloncha knudseni P. Bouchet & A. Warén, 1986 - (BUCCINIDAE)
- knudseni, Clavatula knudseni F. Nolf & J. Verstraeten, 2007 - (CLAVATULIDAE)
- knudseni, Conus knudseni F. Sander, 1982 - syn of: Sandericonus sanderi (E. Wils & R.G. Moolenbeek, 1979) - (CONIDAE)
- knudseni, Cardiomya knudseni (J.A. Allen & R.E. Morgan, 1981) - (CUSPIDARIIDAE)
- knudseni, Drillia knudseni D.L. Tippett, 2006 - (DRILLIIDAE)
- knudseni, Vitreolina knudseni P. Bouchet & A. Warén, 1986 - (EULIMIDAE)
- knudseni, Pleuropoma rotelloidea knudseni H.A. Pilsbry & C.M. Cooke, 1908 - (HELICINIDAE)
- knudseni, Limatula knudseni J. Stuardo, 1968 - syn of: Limatula siberutensis (K.H.J. Thiele, 1920) - (LIMIDAE)
- knudseni, Limopsis knudseni R.K. Dell, 1990 - (LIMOPSIDAE)
- knudseni, Coralliophila knudseni C. Smriglio & P. Mariottini, 2000 - (MURICIDAE)
- knudseni, Dacrydium knudseni J.A. Allen, 1998 - (MYTILIDAE)
- knudseni, Parayoldiella knudseni Z.A. Filatova & A.A. Schileyko, 1985 - (NUCULANIDAE)
- knudseni, Catillopecten knudseni (F.R. Bernard, 1978) - (PROPEAMUSSIIDAE)
- knudseni, Amphiplica knudseni J.H. McLean, 1988 - (PSEUDOCOCCULINIDAE)
- knudseni, Odostomella knudseni C.F.C. Schander, S. Hori & Lundberg, 1999 - (PYRAMIDELLIDAE)
- knudseni, Sepiola knudseni W. Adam, 1983 - (SEPIOLIDAE)
- knudseni, Terebra knudseni T. Bratcher, 1983 - (TEREBRIDAE)
- knudseni, Diplodonta knudseni M. Nicklés, 1955 - (UNGULINIDAE)
- knudseni, Pitar knudseni J. Poutiers, 1981 - syn of: Costellipitar manillae (G.B. II Sowerby, 1851) - (VENERIDAE)
- knudseni, Costellipitar knudseni J. Poutiers, 1981 - syn of: Costellipitar manillae (G.B. II Sowerby, 1851) - (VENERIDAE)
- knudseni, Wemersoniella knudseni V. Scarabino, 1995 - (WEMERSONIELLIDAE)
- knudseni, Xylophaga knudseni T.A. Okutani, 1975 - (XYLOPHAGAIDAE)
- knysnaense, Caecum knysnaense A. Vannozzi, M. Pizzini & B.K. Raines, 2015 - (CAECIDAE)
- knysnaensis, Hydrobia knysnaensis (C.F.F. von Krauss, 1848) - (HYDROBIIDAE)
- knysnaensis, Afrolittorina knysnaensis (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- knysnaensis, Littorina knysnaensis R.A. Philippi, 1847 - syn of: Afrolittorina knysnaensis (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- knysnaensis, Nodilittorina knysnaensis C.F.F. von Krauss in R.A. Philippi, 1847 - syn of: Afrolittorina knysnaensis (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- knysnaensis, Littorina knysnaensis C.F.F. von Krauss in R.A. Philippi, 1847 - syn of: Afrolittorina knysnaensis (C.F.F. von Krauss in R.A. Philippi, 1847) - (LITTORINIDAE)
- knysnaensis, Turritella knysnaensis C.F.F. von Krauss, 1848 - (TURRITELLIDAE)
- koarana, Ruatara koarana G.A. Solem, 1976 - (ENDODONTIDAE)
- kobai, Astyris kobai A.N. Golikov & O.V. Kussakin, 1962 - (COLUMBELLIDAE)
- kobalkai, Bithynia kobalkai P. Glöer & J. Beckmann, 2007 - syn of: Bithynia kobialkai P. Glöer & J. Beckmann, 2007 - (BITHYNIIDAE)
- kobayashi, Teiichispira kobayashi E.L. Yochelson & Jones, 1968 † - syn of: Teiichispira zonata (O. Kobayashi, 1959 †) - (MACLURITIDAE) (FOSSIL)
- kobayashi, Hoffetrigonia kobayashi (Hoffet †) - (TRIGONIOIDIDAE) (FOSSIL)
- Kobayashiconcha, Genus Kobayashiconcha Frύda, 1998 (PLEUROTOMARIOIDEA (unassigned)) (FOSSIL)
- Kobayashiella, Genus Kobayashiella Endo, 1937 (ONYCHOCHILIDAE) (FOSSIL)
- kobayashii, Akiyoshia kobayashii J.T. Kuroda & T. Habe, 1958 - (HYDROBIIDAE)
- kobayashii, Vaugonia kobayashii Alencaster, 1963 † - (MYOPHORELLIDAE) (FOSSIL)
- kobayashii, Cellana kobayashii T. Kase, T. Nakano, Y. Kurihara & T. Haga, 2013 † - (NACELLIDAE) (FOSSIL)
- kobayashii, Labrocuspis kobayashii T. Kase & Nishida, 1986 † - (OMPHALOTROCHIDAE) (FOSSIL)
- kobayashii, Oxytoma kobayashii I. Hayami, 1959 † - (OXYTOMIDAE) (FOSSIL)
- kobayashii, Pyramidula kobayashii J.T. Kuroda & M. Hukuda, 1944 - (PYRAMIDULIDAE)
- kobayashii, Myophorigonia kobayashii Tamura & McRoberts, 1993 † - (TRIGONIIDAE) (FOSSIL)
- Kobayashites, Genus Kobayashites Hayami, 1959 (BAKEVELLIIDAE) (FOSSIL)
- Kobayshites, Genus Kobayshites (PTERIIDA (unassigned)) (FOSSIL)
- kobelli, Hildoglochiceras kobelli (Oppel, 1863 †) - (HAPLOCERATIDAE) (FOSSIL)
- kobelli, Loxonema kobelli Klipstein, 1843 † - (LOXONEMATIDAE) (FOSSIL)
- kobelti, Limicolaria kobelti A. d'Ailly, 1896 - (ACHATINIDAE)
- kobelti, Renea kobelti (A.J. Wagner, 1910) - (ACICULIDAE)
- kobelti, Baicalancylus kobelti (W. Dybowski, 1885) - (ACROLOXIDAE)
- kobelti, Lanistes kobelti T. Pain, 1954 - syn of: Lanistes congicus O. Böttger, 1891 - (AMPULLARIIDAE)
- kobelti, Calocochlia kobelti O.F. von Möllendorff, 1890 - (BRADYBAENIDAE)
- kobelti, Buccinulum kobelti H. Strebel, 1905 - syn of: Meteuthria martensi (H. Strebel, 1905) - (BUCCINIDAE)
- kobelti, Volutopsius behringii kobelti W.H. Dall, 1902 - (BUCCINIDAE)
- kobelti, Cardium kobelti H. von Maltzan, 1885 - syn of: Europicardium serrulatum kobelti (H. von Maltzan, 1885) - (CARDIIDAE)
- kobelti, Europicardium serrulatum kobelti (H. von Maltzan, 1885) - (CARDIIDAE)
- kobelti, Cerithium kobelti R.W. Dunker, 1877 - (CERITHIIDAE)
- kobelti, Pilsbrycharopa kobelti (O. Böttger, 1908) - (CHAROPIDAE)
- kobelti, Chondrina kobelti (C.A. Westerlund, 1878) - (CHONDRINIDAE)
- kobelti, Medora italiana kobelti H. Nordsieck, 1970 - (CLAUSILIIDAE)
- kobelti, Cryptazeca kobelti E. Gittenberger, 1983 - (COCHLICOPIDAE)
- kobelti, Obscurella kobelti A.J. Wagner, 1897 - syn of: Cochlostoma obscurum laburdense (L. de Folin & F. Bèrillon, 1877) - (COCHLOSTOMATIDAE)
- kobelti, Conus kobelti C.H.W.T. Löbbecke & W. Kobelt, 1882 - syn of: Rhizoconus hyaena (C.H. Hwass, 1792) - (CONIDAE)
- kobelti, Diplommatina kobelti H.A. Pilsbry, 1901 - (DIPLOMMATINIDAE)
- kobelti, Auriculinella kobelti A. Caruana Gatto, 1890 - syn of: Auriculinella bidentata (G. Montagu, 1808) - (ELLOBIIDAE)
- kobelti, Epitonium kobelti S. Clessin, 1897 - (EPITONIIDAE)
- kobelti, Epitonium kobelti C.F. Jickeli, 1880 - syn of: Cirsotrema fimbriolatum (J.C. Melvill, 1897) - (EPITONIIDAE)
- kobelti, Fusinus kobelti (W.H. Dall, 1877) - (FASCIOLARIIDAE)
- kobelti, Lepidotrichia kobelti (O.F. von Möllendorff, 1890) - (HELICARIONIDAE)
- kobelti, Eremina kobelti (C.A. Westerlund, 1844) - (HELICIDAE)
- kobelti, Lucidella kobelti A.J. Wagner, 1910 - (HELICINIDAE)
- kobelti, Acme kobelti A.J. Wagner, 1910 - syn of: Renea kobelti (A.J. Wagner, 1910) - (HYDROBIIDAE)
- kobelti, Georissa kobelti P.V. Gredler, 1902 - (HYDROCENIDAE)
- kobelti, Radix kobelti (. Brusina, 1884 †) - (LYMNAEIDAE) (FOSSIL)
- kobelti, Bela kobelti T.A. Verkrüzen, 1875 - syn of: Propebela arctica (A. Adams, 1855) - (MANGELIIDAE)
- kobelti, Tandonia kobelti P. Hesse, 1882 - syn of: Tandonia sowerbyi (A.E.J. Férussac, 1823) - (MILACIDAE)
- kobelti, Aperostoma kobelti C. de la Torre, P. Bartsch & J.P.E. Morrison, 1942 - (NEOCYCLOTIDAE)
- kobelti, Oxychilus kobelti (W.A. Lindholm, 1910) - (OXYCHILIDAE)
- kobelti, Pomatias kobelti C.A. Westerlund, 1890 - syn of: Pomatias elegans (O.F. Müller, 1774) - (POMATIIDAE)
- kobelti, Eulimella kobelti (P. Dautzenberg, 1912) - (PYRAMIDELLIDAE)
- kobelti, Turbonilla kobelti P. Dautzenberg, 1912 - syn of: Eulimella kobelti (P. Dautzenberg, 1912) - (PYRAMIDELLIDAE)
- kobelti, Turritriton kobelti (H. von Maltzan, 1884) - (RANELLIDAE)
- kobelti, Cymatium kobelti H. von Maltzan, 1884 - syn of: Turritriton kobelti (H. von Maltzan, 1884) - (RANELLIDAE)
- kobelti, Succinea kobelti J. Hazay, 1881 - syn of: Succinella oblonga (J.P.R. Draparnaud, 1801) - (SUCCINEIDAE)
- kobelti, Unio kobelti W. Kobelt & H. Rolle, 1895 - syn of: Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- kobelti, Anodonta kobelti H.F.A. von Ihering, 1893 - syn of: Sinanodonta woodiana (I. Lea, 1834) - (UNIONIDAE)
- kobelti, Unio kobelti M. von Neumayr, 1899 - syn of: Nodularia douglasiae (J.E. Gray in E. Griffith & E. Pidgeon, 1834) - (UNIONIDAE)
- kobelti, Zonites kobelti O. Böttger, 1898 - (ZONITIDAE)
- kobelti, Schistophallus kobelti W.A. Lindholm, 1910 - syn of: Oxychilus kobelti (W.A. Lindholm, 1910) - (ZONITIDAE)
- kobelti albanica, Renea kobelti albanica H.D. Boeters, E. Gittenberger & P. Subai, 1989 - (ACICULIDAE)
- Kobeltia, Subgenus Arion (Kobeltia) H. Seibert, 1873 (ARIONIDAE)
- kobeltiana, Parabaicalia kobeltiana (W.A. Lindholm, 1909) - (AMNICOLIDAE)
- kobeltiana, Arca kobeltiana H.A. Pilsbry, 1904 - syn of: Arca boucardi F.P. Jousseaume, 1894 - (ARCIDAE)
- kobeltiana, Siciliaria kobeltiana H.C. Küster, 1876 - (CLAUSILIIDAE)
- kobeltiana, Peristernia kobeltiana C.M. Tapparone-Canefri, 1879 - syn of: Peristernia zealandica (H.C. Küster & W. Kobelt, 1876) - (FASCIOLARIIDAE)
- kobeltiana, Helix kobeltiana M. Paulucci, 1881 - syn of: Cingulifera cingulatum carrarensis (P. von Ströbel, 1852) - (HELICIDAE)
- kobeltiana, Campylaea kobeltiana S. Clessin, 1887 - syn of: Faustina illyrica (G. Stabile, 1864) - (HELICIDAE)
- kobeltiana, Ricinula kobeltiana C.M. Tapparone-Canefri, 1880 - syn of: Pollia incarnata (G.P. Deshayes in E.S.J.L. de Laborde & M. Linant, 1834) - (MURICIDAE)
- kobeltiana, Spixia kobeltiana (A. Doering, 1880) - (ODONTOSTOMIDAE)
- kobeltiana, Anodonta kobeltiana G.B. Adami - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- kobeltianum, Penicillus kobeltianum C.H.W.T. Löbbecke, 1879 - syn of: Verpa penis (C. Linnaeus, 1758) - (PENICILLIDAE)
- kobeltianus, Unio kobeltianus F. Haas, 1913 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- Kobeltocochlea, Genus Kobeltocochlea W.A. Lindholm, 1909 (LITHOGLYPHIDAE)
- kobeltoides, Chondrina kobeltoides E. Gittenberger, 1973 - (CHONDRINIDAE)
- kobensis, Aegista kobensis P.B. Schmacker & O. Böttger, 1890 - (BRADYBAENIDAE)
- kobensis, Stereophaedusa japonica kobensis (E.A. Smith, 1876) - (CLAUSILIIDAE)
- kobensis, Fruticocampylaea kobensis O. Böttger, 1883 - syn of: Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HYGROMIIDAE)
- kobensis discus, Aegista kobensis discus H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- kobensis gotoensis, Aegista kobensis gotoensis H.A. Pilsbry & Y. Hirase, 1902 - (BRADYBAENIDAE)
- kobensis koshikijimana, Aegista kobensis koshikijimana H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- kobensis pertenuis, Aegista kobensis pertenuis H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- kobensis tsumiyamai, Aegista kobensis tsumiyamai J.T. Kuroda & T. Habe, 1951 - (BRADYBAENIDAE)
- kobialkai, Bithynia kobialkai P. Glöer & J. Beckmann, 2007 - (BITHYNIIDAE)
- kobiensis, Helix kobiensis O. Böttger, 1883 - syn of: Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HELICIDAE)
- kobiensis, Fruticocampylaea kobiensis O. Böttger, 1883 - syn of: Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HYGROMIIDAE)
- kobiensis, Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HYGROMIIDAE)
- kobiensis, Loliolus kobiensis W.E. Hoyle, 1885 - syn of: Loliolus sumatrensis (A.V.M.D. D'Orbigny, 1835) - (LOLIGINIDAE)
- kobiensis, Sepia kobiensis W.E. Hoyle, 1885 - (SEPIIDAE)
- kobiensis fluxa, Helix kobiensis fluxa O.W. Von Rosen, 1914 - syn of: Fruticocampylaea narzanensis kobiensis (O. Böttger, 1883) - (HELICIDAE)
- kobjakovae, Buccinum kobjakovae A.N. Golikov & B.I. Sirenko, 1988 - (BUCCINIDAE)
- kobjakovae, Tripoplax kobjakovae (A.M. Jakovleva, 1952) - (ISCHNOCHITONIDAE)
- kobjakovae kamtchatkana, Tripoplax kobjakovae kamtchatkana (B.I. Sirenko, 1975) - (ISCHNOCHITONIDAE)
- kobjumensis, Promyalina kobjumensis Truschelev, 1996 † - (MYALINIDAE) (FOSSIL)
- koboldi, Goniatites koboldi Ruprecht, 1937 † - (GONIATITIDAE) (FOSSIL)
- Kobyashiceras, Genus Kobyashiceras Niko & Shuji, 1998 (ACTINOCERIDA (unassigned)) (FOSSIL)
- kobyi, Euaspidoceras kobyi Jeannet, 1951 † - (ASPIDOCERATIDAE) (FOSSIL)
- kobylkense, Paragastrioceras kobylkense Borissenkov, 2010 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- Kocaelia, Genus Kocaelia Fantini Sestini, 1990 (BEYRICHITIDAE) (FOSSIL)
- kocapinarica, Graecoanatolica kocapinarica P. Radoman, 1973 - (HYDROBIIDAE)
- kochanskyae, Viviparus kochanskyae O. Mandic, Kurecic, T.A. Neubauer & M. Harzhauser † - (VIVIPARIDAE) (FOSSIL)
- kochetkovi, Khostalestes kochetkovi A.N. Suvorov, 2003 - (TRIGONOCHLAMYDIDAE)
- kochi, Iselica kochi A.M. Strong & L.G. Hertlein, 1939 - (AMATHINIDAE)
- kochi, Scutalus kochi (L. Pfeiffer, 1846) - (BULIMULIDAE)
- kochi, Calliostoma kochi P.M. Pallary, 1902 - (CALLIOSTOMATIDAE)
- kochi, Parvicardium kochi (C.G. Semper, 1861 †) - (CARDIIDAE) (FOSSIL)
- kochi, Rhinoclavis kochi (R.A. Philippi, 1848) - (CERITHIIDAE)
- kochi, Rhinoclavis kochi R.A. Philippi, 1848 - syn of: Rhinoclavis kochi (R.A. Philippi, 1848) - (CERITHIIDAE)
- kochi, Proclava kochi J.B.P.A. Lamarck, 1822 - syn of: Rhinoclavis kochi (R.A. Philippi, 1848) - (CERITHIIDAE)
- kochi, Ophiceras kochi (Griesbach 1880 †) - (DIENEROCERATIDAE) (FOSSIL)
- kochi, Anguispira kochi (C. Pfeiffer, 1821) - (DISCIDAE)
- kochi, Pseudomelampus kochi P.M. Pallary, 1900 - syn of: Pseudomelampus exiguus (R.T. Lowe, 1832) - (ELLOBIIDAE)
- kochi, Eulima kochi C.G. Semper, 1861 † - (EULIMIDAE) (FOSSIL)
- kochi, Planammatoceras kochi (Prinz, 1904 †) - (HAMMATOCERATIDAE) (FOSSIL)
- kochi, Dumortieria kochi Benecke, 1905 † - (HILDOCERATIDAE) (FOSSIL)
- kochi, Pernoceras kochi (Wedekind, 1908 †) - (KIRSOCERATIDAE) (FOSSIL)
- kochi, Undulotheca kochi Gorjanovic-Kramberger, 1923 † - (LYMNAEIDAE) (FOSSIL)
- kochi, Mangelia kochi P.M. Pallary, 1904 - syn of: Mangelia pallaryi (F. Nordsieck, 1977) - (MANGELIIDAE)
- kochi, Ecphora kochi Ward & Gilinsky, 1988 † - (MURICIDAE) (FOSSIL)
- kochi, Promyalina kochi Spath, 1930 † - (MYALINIDAE) (FOSSIL)
- kochi, Praeturbonitella kochi Heidelberger & Koch, 2005 † - (NERITOPSIDAE) (FOSSIL)
- kochi, Discophiceras kochi (Spath, 1930 †) - (OPHICERATIDAE) (FOSSIL)
- kochi, Costipelagiella kochi Peel, 1988 † - (PELAGIELLIDAE) (FOSSIL)
- kochi, Planorbis kochi P.S. Pavlovic, 1927 † - (PLANORBIDAE) (FOSSIL)
- kochi, Hectoroceras kochi Spath, 1947 † - (POLYPTYCHITIDAE) (FOSSIL)
- kochi, Rhynchocerithium kochi (G.A. Goldfuss, 1844 †) - (PROCERITHIIDAE) (FOSSIL)
- kochi, Pseudaganides kochi (Prinz, 1906 †) - (PSEUDONAUTILIDAE) (FOSSIL)
- kochi, Palaeocosmomya kochi Newell, 1955 † - (SANGUINOLITIDAE) (FOSSIL)
- kochi, Sepiadarium kochi J.J.S. Steenstrup, 1881 - (SEPIADARIIDAE)
- kochi, Aylacostoma kochi (A.C. Bernardi, 1856) - (THIARIDAE)
- kochi, Jujubinus kochi F. Nordsieck, 1973 - syn of: Jujubinus ruscurianus (H.C. Weinkauff, 1868) - (TROCHIDAE)
- kochi, Valvata kochi P.S. Pavlovic, 1932 † - (VALVATIDAE) (FOSSIL)
- kochi, Venus kochi R.A. Philippi, 1843 - syn of: Eumarcia paupercula (H.S. Holten, 1802) - (VENERIDAE)
- kochi, Vitrina kochi A. Andreae, 1884 - (VITRINIDAE)
- kochi, Vitrina kochi Auct. non A. Andreae, 1884 - syn of: Eucobresia nivalis (F. Dumont & L.L.G. de Mortillet, 1852) - (VITRINIDAE)
- kochi decorata, Calliostoma kochi decorata P.M. Pallary, 1920 - syn of: Calliostoma kochi P.M. Pallary, 1902 - (CALLIOSTOMATIDAE)
- kochi laevigata, Calliostoma kochi laevigata P.M. Pallary, 1920 - syn of: Calliostoma kochi P.M. Pallary, 1902 - (CALLIOSTOMATIDAE)
- kochi occidentalis, Anguispira kochi occidentalis E.C. Von Martens, 1882 - (DISCIDAE)
- kochi planicosta, Calliostoma kochi planicosta P.M. Pallary, 1920 - syn of: Calliostoma kochi P.M. Pallary, 1902 - (CALLIOSTOMATIDAE)
- kochi polita, Rhinoclavis kochi polita H.B. Preston, 1908 - syn of: Rhinoclavis kochi (R.A. Philippi, 1848) - (CERITHIIDAE)
- kochi recurva, Rhinoclavis kochi recurva (G.B. II Sowerby, 1855) - (CERITHIIDAE)
- kochi trifuniculata, Calliostoma kochi trifuniculata P.M. Pallary, 1920 - syn of: Calliostoma kochi P.M. Pallary, 1902 - (CALLIOSTOMATIDAE)
- Kochia, syn of: Genus Myosotella T.A. de M. Monterosato, 1906 (ELLOBIIDAE)
- Kochia, Genus Kochia Frech, 1891 (KOCHIIDAE) (FOSSIL)
- kochiana, Tornatellinops kochiana (O.F. von Möllendorff, 1888) - (ACHATINELLIDAE)
- kochiana, Ocinebra kochiana G.B. III Sowerby, 1900 - syn of: Lataxiena cumella (F.P. Jousseaume, 1898) - (MURICIDAE)
- kochianum, Buccinum kochianum R.W. Dunker, 1858 - syn of: Nassarius quantulus (A.A. Gould, 1860) - (BUCCINIDAE)
- kochianus, Argonauta kochianus R.W. Dunker, 1852 - syn of: Argonauta hians J. Lightfoot, 1786 - (ARGONAUTIDAE)
- kochianus, Stilifer kochianus G.B. III Sowerby, 1901 - syn of: Eulima variabilis O. Böttger, 1893 - (EULIMIDAE)
- kochianus, Nassarius kochianus (R.W. Dunker, 1846) - (NASSARIIDAE)
- kochianus crawfordi, Nassarius kochianus crawfordi G.B. III Sowerby, 1892 - (NASSARIIDAE)
- kochiensis, Hemizaptyx stimpsoni kochiensis (H.A. Pilsbry, 1901) - (CLAUSILIIDAE)
- kochiensis, Diplommatina shikokuensis kochiensis J.T. Kuroda & J.M. Abe, 1961 - (DIPLOMMATINIDAE)
- kochiensis, Gryphaeostrea kochiensis Tashiro & Kozai, 1982 † - (GRYPHAEIDAE) (FOSSIL)
- kochigataniensis, Anodontophora kochigataniensis O. Kobayashi & M. Ichikawa, 1950 † - (TRIGONODIDAE) (FOSSIL)
- kochigataniensis hiratai, Anodontophora kochigataniensis hiratai O. Kobayashi & M. Ichikawa, 1950 † - (TRIGONODIDAE) (FOSSIL)
- kochii, Architectonica kochii W.H. Dall, 1909 - (ARCHITECTONICIDAE)
- kochii, Goniochilus kochii (A. Fuchs, 1870 †) - (HYDROBIIDAE) (FOSSIL)
- kochii, Tricolia kochii (R.A. Philippi, 1848) - (PHASIANELLIDAE)
- kochii, Ashmunella kochii W.F. Clapp, 1908 - (POLYGYRIDAE)
- kochii, Pterocera kochii C. Freyer, 1855 - syn of: Harpago chiragra (C. Linnaeus, 1758) - (STROMBIDAE)
- kochii, Trochus kochii (R.A. Philippi, 1844) - (TROCHIDAE)
- kochii, Trochus kochii P.M. Pallary, 1900 - (TROCHIDAE)
- kochii, Infundibulum kochii R.A. Philippi, 1844 - syn of: Trochus kochii (R.A. Philippi, 1844) - (TROCHIDAE)
- KOCHIIDAE Frech, 1891 - Family (BIVALVIA-PTERIOMORPHIA-PTERIIDA) (FOSSIL)
- kochiriensis, Sinuitopsis kochiriensis Kobayashi, 1930 † - syn of: Modestospira kochiriensis (Kobayashi, 1930 †) - (CYRTOLITIDAE) (FOSSIL)
- kochiriensis, Modestospira kochiriensis (Kobayashi, 1930 †) - (SINUITIDAE) (FOSSIL)
- Kochoceras, Genus Kochoceras Troedsson, 1926 (ACTINOCERATIDAE) (FOSSIL)
- kochyonense, Centrocyrtoceras kochyonense (T. Kobayashi, 1934 †) - (BARRANDOCERATIDAE) (FOSSIL)
- kochyonense, Cyrtoceras kochyonense T. Kobayashi, 1928 † - syn of: Centrocyrtoceras kochyonense (T. Kobayashi, 1934 †) - (ONCOCERIDA (unassigned)) (FOSSIL)
- kocki, Albinaria kocki H. Nordsieck, 1979 - syn of: Albinaria adrianae E. Gittenberger, 1979 - (CLAUSILIIDAE)
- kockii, Galatea kockii (A.C. Bernardi, 1860) - (DONACIDAE)
- koczyrkeviczi, Xenodiscus koczyrkeviczi Zakharov, 1989 † - (MEEKOCERATIDAE) (FOSSIL)
- kodaijimensis, Vaugonia kodaijimensis Kobayashi & A. Mori, 1955 † - (MYOPHORELLIDAE) (FOSSIL)
- kodairai, Lophospira kodairai Kobayashi, 1930 † - syn of: Lophospira selecta (Billings, 1865 †) - (LOPHOSPIRIDAE) (FOSSIL)
- kodairai, Trigonioides kodairai Kobayashi & Suzuki, 1936 † - (TRIGONIOIDIDAE) (FOSSIL)
- Kododaphne, syn of: Genus Daphnella R.B. Hinds, 1844 (RAPHITOMIDAE)
- kodungensis, Batissa kodungensis Noetling, 1901 † - (CYRENIDAE) (FOSSIL)
- Kodymites, Genus Kodymites Hornύ, 1962 (BELLEROPHONTIDAE) (FOSSIL)
- koe, Ostrincola koe M. Tanaka, 1961 - syn of: Sinonovacula constricta (J.B.P.A. Lamarck, 1818) - (PHARIDAE)
- koechlini, Crioceratites koechlini Astier, 1851 † - syn of: Emericiceras koechlini (Astier, 1851 †) - (CRIOCERATITIDAE) (FOSSIL)
- koechlini, Emericiceras koechlini (Astier, 1851 †) - (EMERICICERATIDAE) (FOSSIL)
- koegleri, Inoceramus koegleri Andert, 1911 † - (INOCERAMIDAE) (FOSSIL)
- koehleri, Kryptos koehleri (É.A.A. Locard, 1896) - (BUCCINIDAE)
- koehleri, Phyllodesmium koehleri G.E. Burghardt, M. Schrödl & H. Wägele, 2008 - (FACELINIDAE)
- koehleri, Phyllidia koehleri A. Perrone, 2000 - (PHYLLIDIIDAE)
- koehleri, Turbonilla koehleri A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- koehleri, Pleurotomella koehleri É.A.A. Locard, 1896 - syn of: Kryptos koehleri (É.A.A. Locard, 1896) - (RAPHITOMIDAE)
- koehleri, Unio koehleri J. Germain, 1909 - syn of: Coelatura aegyptiaca koehleri J. Germain, 1909 - (UNIONIDAE)
- koehleri, Coelatura aegyptiaca koehleri J. Germain, 1909 - (UNIONIDAE)
- koellikeri, Octopus koellikeri J.B. Vérany, 1851 - syn of: Tremoctopus violaceus S. Delle Chiaje, 1830 - (OCTOPODIDAE)
- koeneni, Aegocrioceras koeneni Spath, 1924 † - (AEGOCRIOCERATIDAE) (FOSSIL)
- koeneni, Tonohamites koeneni T.L. Casey, 1961 † - (ANCYLOCERATIDAE) (FOSSIL)
- koeneni, Aglaoglypta koeneni (A.H. Clarke, 1904 †) - (BELLEROPHONTIDAE) (FOSSIL)
- koeneni, Bittium koeneni † - (CERITHIIDAE) (FOSSIL)
- koeneni, Hoplitoides koeneni Solger, 1904 † - (COILOPOCERATIDAE) (FOSSIL)
- koeneni, Pachydiscus koeneni de Grossouvre, 1894 † - syn of: Pachydiscus haldemsis (Schluter, 1867 †) - (DESMOCERATIDAE) (FOSSIL)
- koeneni, Cirsotrema koeneni A.W. Janssen † - (EPITONIIDAE) (FOSSIL)
- koeneni, Eulima koeneni . Brusina, 1893 - (EULIMIDAE)
- koeneni, Euthriofusus regularis koeneni L. Dolin & Renard, 1980 † - (FASCIOLARIIDAE) (FOSSIL)
- koeneni, Costamanticoceras koeneni (Holzapfel, 1882 †) - (GEPHUROCERATIDAE) (FOSSIL)
- koeneni, Goniatites koeneni Holzapfel, 1882 † - syn of: Costamanticoceras koeneni (Holzapfel, 1882 †) - (GONIATITIDAE) (FOSSIL)
- koeneni, Sphaera koeneni (Behrendsen †) - (LUCINIDAE) (FOSSIL)
- koeneni, Bensaidites koeneni (Frech, 1902 †) - (MAENIOCERATIDAE) (FOSSIL)
- koeneni, Bela koeneni (A.E.M. Cossmann & A. Lambert, 1884 †) - (MANGELIIDAE) (FOSSIL)
- koeneni, Owenites koeneni A. Hyatt & Smith, 1905 † - (MELAGATHICERATIDAE) (FOSSIL)
- koeneni, Natica koeneni F. Sacco, 1891 † - syn of: Notocochlis dillwynii koeneni (F. Sacco, 1891 †) - (NATICIDAE) (FOSSIL)
- koeneni, Notocochlis dillwynii koeneni (F. Sacco, 1891 †) - (NATICIDAE) (FOSSIL)
- koeneni, Substeueroceras koeneni (Steuer, 1897 †) - (NEOCOMITIDAE) (FOSSIL)
- koeneni, Ptychomya koeneni Behrendsen, 1892 † - (PTYCHOMYIDAE) (FOSSIL)
- koeneni, Odostomia koeneni (Boettger, 1907 †) - (PYRAMIDELLIDAE) (FOSSIL)
- koeneni, Cingula koeneni M. Glibert, 1952 † - (RISSOIDAE) (FOSSIL)
- koeneni, Scissurella koeneni C.G. Semper, 1865 - (SCISSURELLIDAE)
- koeneni, Maeneceras koeneni Frech, 1902 † - syn of: Bensaidites koeneni (Frech, 1902 †) - (SPORADOCERATIDAE) (FOSSIL)
- koeneni, Sigmesalia koeneni Renard, 1994 † - (TURRITELLIDAE) (FOSSIL)
- koeneni coihuicoensis, Ptychomya koeneni coihuicoensis Behrendsen, 1892 † - (PTYCHOMYIDAE) (FOSSIL)
- Koenenia, Genus Koenenia Beushausen, 1884 (MALLETIIDAE) (FOSSIL)
- koeneniana, Turbonilla koeneniana F. Sacco, 1892 † - (PYRAMIDELLIDAE) (FOSSIL)
- koeneniana, Scissurella koeneniana R. Janssen, 1978 † - (SCISSURELLIDAE) (FOSSIL)
- Koeneniceras, Genus Koeneniceras Mikhailova & Baraboshkin, 2002 (ANCYLOCERATIDAE) (FOSSIL)
- Koenenites, Genus Koenenites Wedekind , 1913 (KOENENITIDAE) (FOSSIL)
- KOENENITIDAE Becker & House, 1993 - Family (CEPHALOPODA-AMMONOIDEA-AGONIATITIDA) (FOSSIL)
- koeni, Owenites koeni A. Hyatt & Smith, 1905 † - syn of: Owenites koeneni A. Hyatt & Smith, 1905 † - (MELAGATHICERATIDAE) (FOSSIL)
- koeni, Septifer koeni S. Nomura - (MYTILIDAE)
- koenigi, Vitrinoides koenigi H.R. Simroth, 1912 - (LIMACIDAE)
- koenigi, Proplanulites koenigi (J. de C. Sowerby, 1820) - (PERISPHINCTIDAE)
- koenigswaldi, Odontostomus koenigswaldi (K.H.J. Thiele, 1906) - (ODONTOSTOMIDAE)
- koenigwaldi, Macrodontes koenigwaldi K.H.J. Thiele, 1906 - syn of: Odontostomus koenigswaldi (K.H.J. Thiele, 1906) - (ORTHALICIDAE)
- koenneckeri, Doto koenneckeri H.M. Lemche, 1976 - (DOTIDAE)
- koepckei, Pfeifferiella koepckei (A. Zilch, 1953) - (CLAUSILIIDAE)
- koepckei, Thaumastiella koepckei (A. Zilch, 1953) - (MEGASPIRIDAE)
- koerneri, Eocalliostoma koerneri F. Haas, 1953 † - (PROCONULIDAE) (FOSSIL)
- koerti, Arca koerti Bohm & Weisfermel, 1913 † - (ARCIDAE) (FOSSIL)
- koerti, Noetia koerti Bohm, 1913 † - (NOETIIDAE) (FOSSIL)
- koestneri, Pectinistemma koestneri H.A. Rehder, 1940 - (EPIROBIIDAE)
- koettlitzi, Sepia koettlitzi W.E. Hoyle & R. Standen, 1901 - syn of: Sepia pharaonis C.G. Ehrenberg, 1831 - (SEPIIDAE)
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