Lotzeites aberrans (FOSSIL) (Kossmat, 1895 †)
Graysonites adkinsi (FOSSIL) A.T. Young, 1958 †
Cunningtoniceras africanum (FOSSIL) (Pervinquiére, 1907 †)
Romaniceras alamitosensis (FOSSIL) (Aguilera 1895 †)
Dunveganoceras albertense (FOSSIL) (Warren, 1930 †)
Newboldiceras algeriense (FOSSIL) J. Kennedy & A.S. Gale,2017 †
Acanthoceras alvaradoense (FOSSIL) Moreman, 1942 †
Alzadites alzadensis (FOSSIL) J. Kennedy & Cobban,1990 †
Acanthoceras amphibolum (FOSSIL) C.C. Morrow, 1935 †
Watinoceras amudariense (FOSSIL) (Arkhanguelsky, 1916 †)
Kamerunoceras andinum (FOSSIL) Renz, 1982 †
Pseudocalycoceras angolaense (FOSSIL) Spath, 1931 †
Newboldiceras annulatum (FOSSIL) M. Collignon, 1964 †
Kamerunoceras antsaronense (FOSSIL) M. Collignon, 1965 †
Cunningtoniceras arizonense (FOSSIL) Kirkland & Cobban, 1986 †
Protacanthoceras arkelli (FOSSIL) Wright & J. Kennedy,1980 †
Pseudaspidoceras armatum (FOSSIL) Pervinquiére, 1907 †
Jeanrogericeras asflaensis (FOSSIL) Meister & al., 2017 †
Protacanthoceras asgeirri (FOSSIL) Wright & Kennedy, 1980 †
Newboldiceras asiaticum (FOSSIL) (Jimbo, 1894 †)
Newboldiceras asiaticum spinosum (FOSSIL) (Kossmat, 1897 †)
Acanthoceras athabascense (FOSSIL) Warren & Stelck, 1955 †
Mantelliceras aumalense (FOSSIL) (Coquand 1862 †)
Pseudaspidoceras auriculatum (FOSSIL) (M. Collignon, 1965 †)
Sharpeiceras australe (FOSSIL) J. Kennedy, 2014 †
Pseudaspidoceras barberi (FOSSIL) Meister, 1989 †
Eucalycoceras batnense (FOSSIL) (M. Collignon, 1937 †)
Acanthoceras bellense (FOSSIL) Adkins, 1928 †
Plesiacanthoceras bellsanum (FOSSIL) (L.W. Stephenson, 1953 †)
Sumitomoceras bentonianum (FOSSIL) Cragin, 1893 †
Benueites benueensis (FOSSIL) Reyment, 1954 †
Metoicoceras bergquisti (FOSSIL) Cobban, 1983 †
Proeucalycoceras besairieri (FOSSIL) M. Collignon, 1937 †
Romaniceras bifurcata (FOSSIL) (Aguilera 1895 †)
Buchiceras bilobatum (FOSSIL) A. Hyatt, 1875 †