Pleydellia aalensis (FOSSIL) Zieten, 1830 †
Hildoceras acarnicum (FOSSIL) †
Leptaleoceras accuratum (FOSSIL) Fucini, 1931 †
Frechiella achillei (FOSSIL) Renz, 1912 †
Protogrammoceras aequiondulatum (FOSSIL) (E. Bettoni, 1900 †)
Hudlestonia affinis (FOSSIL) von Seebach, 1864 †
Arieticeras algovianum (FOSSIL) (Oppel, 1862 †)
Pseudolioceras alienum (FOSSIL) Dagis, 1967 †
Lioceratoides allifordense (FOSSIL) McLearn, 1930 †
Arieticeras amalthei (FOSSIL) (Oppel, 1853 †)
Fuciniceras ambiguum (FOSSIL) (Fucini, 1900 †)
Hildoceras ameuri (FOSSIL) Rulleau & al., 2001 †
Tiltoniceras angionus (FOSSIL) Fucini, 1931 †
Tiltoniceras antiquum (FOSSIL) (Wright, 1882 †)
Pseudolillia apenninica (FOSSIL) Sassaroli & Venturi,2005 †
Arieticeras apertum (FOSSIL) Monestier, 1934 †
Hildoceras apertum (FOSSIL) Gabilly, 1976 †
Polyplectus appenninicus (FOSSIL) F. Haas, 1913 †
Bouleiceras arabicum (FOSSIL) Arkell, 1952 †
Podagrosites aratum (FOSSIL) (Buckman, 1892 †)
Pseudogrammoceras aratum (FOSSIL) Buckman, 1890 †
Emaciaticeras archimedis (FOSSIL) Fucini, 1931 †
Pleydellia arkelli (FOSSIL) Maubeuge, 1950 †
Grammoceras audax (FOSSIL) Buckman †
Osperleioceras authelini (FOSSIL) (Monestier, 1921 †)
Fuciniceras balatonense (FOSSIL) Géczy & Meister, 1998 †
Hildoceras bastiani (FOSSIL) (Fucini, 1905 †)
Phlyseogrammoceras bayani (FOSSIL) (Dumortier, 1874 †)
Pseudolioceras beauliziense (FOSSIL) (Monestier †)
Orthildaites becaudi (FOSSIL) Kovács, 2011 †
Arieticeras bertrandi (FOSSIL) Kilian, 1889 †
Pseudolioceras beyrichi (FOSSIL) Schloenbach, 1865 †
Osperleioceras bicarinatum (FOSSIL) (Zieten, 1831 †)
Fuciniceras bicicolae (FOSSIL) (Bonarelli, 1895 †)
Pleydellia bifax (FOSSIL) Buckman, 1904 †