Pleydellia aalensis (FOSSIL) Zieten, 1830 † Sicily, Mount Magaggiaro
Hildoceras acarnicum (FOSSIL) † Italy, Friuli76 mm
Leptaleoceras accuratum (FOSSIL) Fucini, 1931 † Canada, British Columbia, Skeena-Queen Charlotte
Frechiella achillei (FOSSIL) Renz, 1912 † Hungary, Komárom-Esztergom
Protogrammoceras aequiondulatum (FOSSIL) (E. Bettoni, 1900 †) Canada, British Columbia, Skeena-Queen Charlotte
Hudlestonia affinis (FOSSIL) von Seebach, 1864 † Germany, Bayern, Bayreuth
Arieticeras algovianum (FOSSIL) (Oppel, 1862 †) Canada, British Columbia
Pseudolioceras alienum (FOSSIL) Dagis, 1967 † Bulgaria, Sofia, Svoge
Lioceratoides allifordense (FOSSIL) McLearn, 1930 † Canada, British Columbia, Skeena-Queen Charlotte
Arieticeras amalthei (FOSSIL) (Oppel, 1853 †) France, Indre
Fuciniceras ambiguum (FOSSIL) (Fucini, 1900 †) Hungary, Veszprém
Hildoceras ameuri (FOSSIL) Rulleau & al., 2001 † France, Poitou-Charentes
Tiltoniceras angionus (FOSSIL) Fucini, 1931 † Canada, British Columbia, Skeena-Queen Charlotte
Tiltoniceras antiquum (FOSSIL) (Wright, 1882 †) Bulgaria, Plovdiv, Rodopi
Pseudolillia apenninica (FOSSIL) Sassaroli & Venturi,2005 † Italy, Marche
Arieticeras apertum (FOSSIL) Monestier, 1934 † France, Aveyron31 mm
Hildoceras apertum (FOSSIL) Gabilly, 1976 † France, Poitou-Charentes, Deux-Sèvres
Polyplectus appenninicus (FOSSIL) F. Haas, 1913 † Sicily, Mount Magaggiaro
Bouleiceras arabicum (FOSSIL) Arkell, 1952 † Spain, Aragon, Teruel
Podagrosites aratum (FOSSIL) (Buckman, 1892 †) Bulgaria, Sofia, Svoge
Pseudogrammoceras aratum (FOSSIL) Buckman, 1890 † France, Pays de la Loire, Vendée
Emaciaticeras archimedis (FOSSIL) Fucini, 1931 † Morocco, Oriental, Figuig
Pleydellia arkelli (FOSSIL) Maubeuge, 1950 † Germany, Bayern, Bayreuth
Grammoceras audax (FOSSIL) Buckman † UK, England, Gloucestershire
Osperleioceras authelini (FOSSIL) (Monestier, 1921 †) France, Poitou-Charentes, Deux-Sèvres
Fuciniceras balatonense (FOSSIL) Géczy & Meister, 1998 † Hungary, Fejér, MClr
Hildoceras bastiani (FOSSIL) (Fucini, 1905 †)
Phlyseogrammoceras bayani (FOSSIL) (Dumortier, 1874 †) France, Poitou-Charentes
Pseudolioceras beauliziense (FOSSIL) (Monestier †)
Orthildaites becaudi (FOSSIL) Kovács, 2011 † Hungary, Komárom-Esztergom
Arieticeras bertrandi (FOSSIL) Kilian, 1889 † France, Aveyron
Pseudolioceras beyrichi (FOSSIL) Schloenbach, 1865 † Bulgaria, Lovech, Troyan
Osperleioceras bicarinatum (FOSSIL) (Zieten, 1831 †) France, Pyrenees39 mm
Fuciniceras bicicolae (FOSSIL) (Bonarelli, 1895 †) France, Midi-PyrC©nC©es, Aveyron
Pleydellia bifax (FOSSIL) Buckman, 1904 † France, Isère28 mm