Neogastroplites haasi (FOSSIL) Reeside & Cobban, 1960 †
Dimorphoplites hilli (FOSSIL) Spath †
Callihoplites horridus (FOSSIL) Spath †
Brewericeras hulenense (FOSSIL) (Anderson, 1938 †)
Otohoplites icarus (FOSSIL) Casey †
Freboldiceras imlayi (FOSSIL) Warren & Stelck, 1960 †
Neosaynella inornatum (FOSSIL) T.L. Casey, 1954 †
Anahoplites intermedius (FOSSIL) (Spath 1925 †)
Metaclavites iphitus (FOSSIL) Spath, 1926 †
Subarctoplites irenense (FOSSIL) (McLearn, 1945 †)
Arcthoplites jachromensis (FOSSIL) (Nikitin, 1888 †)
Sonneratia janeti (FOSSIL) de Grossouvre 1894 †
Cleoniceras janneli (FOSSIL) (Parent, 1894 †)
Neogastroplites kamchatkensis (FOSSIL) Alabushev & Wiedmann,1994 †
Sonneratia kitchini (FOSSIL) Spath, 1925 †
Sonneratia kitchini chalensis (FOSSIL) T.L. Casey †
Sonneratia kitchini ovalis (FOSSIL) T.L. Casey †
Euhoplites lautus (FOSSIL) (J. de C. Sowerby,1821 †)
Leconteites lecontei (FOSSIL) (Anderson, 1902 †)
Cleoniceras leightonense (FOSSIL) Spath, 1942 †
Callihoplites leptus (FOSSIL) (Seeley, 1865 †)
Stelckiceras liardense (FOSSIL) (J.J.F. Whiteaves,1889 †)
Lemuroceras linaensis (FOSSIL) McLearn, 1972 †
Semenovites litskovi (FOSSIL) †
Euhoplites loricatus (FOSSIL) Spath, 1925 †
Euhoplites loxicatus (FOSSIL) Spath †
Neogastroplites maclearni (FOSSIL) Reeside & Cobban, 1960 †
Cleoniceras madagascariense (FOSSIL) (M. Collignon, 1949 †)
Hoplites maritimus (FOSSIL) B. Owen, 1971 †
Otohoplites maxinae (FOSSIL) Casey †
Subarcthoplites mcconnelli (FOSSIL) (J.J.F. Whiteaves,1893 †)
Epihoplites metamorphicus (FOSSIL) (Spath, 1926 †)
Semenoviceras michalskii (FOSSIL) (Semenov, 1899 †)
Protohoplites michelinianus (FOSSIL) (A.V.M.D. D'Orbigny,1841 †)
Euhoplites microceras (FOSSIL) (Spath 1925 †)