Tubomphalus inflatus (FOSSIL) J. Perner, 1907 † Czech Republic, StÅ™edoĨeskC½, Beroun
Cyclonema infrequens (FOSSIL) J. Perner, 1907 † Czech Republic, StÅ™edoĨeský, Praha - západ
Cyclonema inopinata (FOSSIL) J. Perner, 1907 †
Platyostoma insolita (FOSSIL) W.H. Webster, 1906 † USA, Iowa, Cerro Gordo
Rhabdocantha intermedia (FOSSIL) E.M. Fletcher, 1958 † Tasmania
Cyclonema intermedium (FOSSIL) (Bradley, 1930 †) USA, Missouri, Lincoln
Tachloconcha interupta (FOSSIL) (J. Perner, 1903 †) Czech Republic, StÅ™edoĨeský, Praha - západ
Platyostoma invictus (FOSSIL) (Whidborne, 1891 †) UK, Devon
Platyostoma irrasum (FOSSIL) Fenton & Fenton, 1924 † USA, Iowa, Marshall
Platyostoma janthinoides (FOSSIL) Oehlert, 1877 † Czech Republic
Platyceras kahlebergensis (FOSSIL) Beushausen, 1884 †
Cyclonema karlsteinensis (FOSSIL) J. Perner, 1903 † Czech Republic, Beroun
Naticonema kauffmani (FOSSIL) Peel, 1975 † Canada, Nova Scotia, Antigonish
Stuckenbergispira kazanensis (FOSSIL) Mazaev, 2015 † Russia, Kirov, Sovetskiy
Nonorios kleistos (FOSSIL) Ebbestad & al., 2008 † Iran, Kerman, Ravar
Platyceras laevicostatum (FOSSIL) Knod, 1908 †
Platyceras latum (FOSSIL) Keyes, 1888 † USA, Arkansas, Scott
Cyclonema laudabile (FOSSIL) J. Perner, 1903 † Czech Republic, Beroun
Platyschisma laudoni (FOSSIL) Rollins, 1975 † USA, Iowa, Washington
Platyceras leboutillieri (FOSSIL) A.H. Clarke, 1907 † Canada, Quebec, Cap-des-Rosiers
Platyceras lejeunii (FOSSIL) A.H. Clarke, 1908 † Canada, Quebec, Cap-des-Rosiers
Turbonellina lepida (FOSSIL) (de Koninck, 1843 †) UK, England, Derbyshire
Cyclonema lepidula (FOSSIL) (J. Perner, 1903 †) Czech Republic, Prague
Cyclonema leptonotum (FOSSIL) (W.J. Raymond, 1905 †) USA, New York, Clinton
Cyclonema limatum (FOSSIL) Ulrich & Scofield, 1897 † Minnesota
Platyceras lineare (FOSSIL) Kindle, 1900 † Indiana
Platyostoma lineata (FOSSIL) T.A. Conrad, 1842 † Indiana
Platyostoma lineata callosa (FOSSIL) (J.W. Hall †) Indiana
Cyclonema lineatum (FOSSIL) E.F.R.K. Koken, 1897 †
Platyschisma lingua (FOSSIL) E.K. Yoo, 1994 † Australia, New South Wales, Gunnedah
Barynema lirata (FOSSIL) (J.W. Hall, 1860 †) New York
Paffrathia lotzi (FOSSIL) (Frýda, 1998 †) Germany, Hessen
Platyostoma lutheri (FOSSIL) A.H. Clarke, 1904 †
Cyclonema lydiamariarum (FOSSIL) Peel, 1975 †
Platyceras magnificum (FOSSIL) J.W. Hall, 1859 † United States, Maryland, Allegany