Frechiella kammerkarensis (FOSSIL) (Stolley, 1903 †)
Harpoceras kisslingi (FOSSIL) Hug, 1898 †
Dumortieria kochi (FOSSIL) Benecke, 1905 †
Protogrammoceras kurrianum (FOSSIL) (Oppel, 1862 †)
Harpoceras lassum (FOSSIL) Buckman, 1927 †
Dumortieria lata (FOSSIL) Buckman †
Dumortieria latescens (FOSSIL) Buckman †
Podagrosites latescens (FOSSIL) (C.T. Simpson, 1843 †)
Hildoceras laticosta (FOSSIL) (R. Bellini, 1900 †)
Dumortieria latumbilicata (FOSSIL) Geczy, 1967 †
Fuciniceras lavinianum (FOSSIL) (Fucini, 1900 †)
Braunsella lenis (FOSSIL) (S.S. Buckman, 1888 †)
Leptaleoceras leptum (FOSSIL) Buckman, 1918 †
Pleydellia leura (FOSSIL) S.S. Buckman, 1890 †
Dumortieria levesquei (FOSSIL) (A.V.M.D. D'Orbigny,1844 †)
Hildaites levisoni (FOSSIL) (C.T. Simpson, 1843 †)
Pleydellia limatula (FOSSIL) Buckman †
Dumortieria linearis (FOSSIL) Buckman †
Osperleioceras loeve (FOSSIL) (Gabilly, 1976 †)
Pleydellia lotharingica (FOSSIL) Branco, 1879 †
Emaciaticeras lottii (FOSSIL) (C. Gemmellaro, 1885 †)
Walkericeras lugdunensis (FOSSIL) S. Elmi & Rulleau, 1995 †
Jacobella lugeoni (FOSSIL) Jeannet, 1908 †
Jacobella lugoni (FOSSIL) Jeannet †
Arieticeras lupheri (FOSSIL) Imlay, 1968 †
Hildoceras lusitanicum (FOSSIL) Meister, 1913 †
Pseudolioceras lythense (FOSSIL) (A.T. Young & Bird,1828 †)
Pseudolioceras maclintocki (FOSSIL) S.H. Haughton, 1858 †
Arieticeras macrum (FOSSIL) Monestier, 1934 †
Pleydellia mactra (FOSSIL) Dumortier 1874 †
Protogrammoceras madagascariense (FOSSIL) (Thevenin, 1908 †)
Fuciniceras marianii (FOSSIL) (Fucini, 1904 †)
Bouleiceras marraticum (FOSSIL) Arkell, 1952 †
Lioceratoides maurelli (FOSSIL) McLearn, 1930 †
Tauromeniceras mazetieri (FOSSIL) (Dubar, 1927 †)