Neogastroplites haasi (FOSSIL) Reeside & Cobban, 1960 †
Dimorphoplites hilli (FOSSIL) Spath † UK, England, Norfolk
Callihoplites horridus (FOSSIL) Spath † UK, England, Wiltshire
Brewericeras hulenense (FOSSIL) (Anderson, 1938 †) Canada, British Columbia, Skeena-Queen Charlotte
Otohoplites icarus (FOSSIL) Casey † England, Kent
Freboldiceras imlayi (FOSSIL) Warren & Stelck, 1960 † Canada, Fort Norman
Neosaynella inornatum (FOSSIL) T.L. Casey, 1954 † UK, England, Kent
Anahoplites intermedius (FOSSIL) (Spath 1925 †)
Metaclavites iphitus (FOSSIL) Spath, 1926 † Iran, Razavi Khorasan, Chenaran
Subarctoplites irenense (FOSSIL) (McLearn, 1945 †) Canada, Alberta, Division No. 14
Arcthoplites jachromensis (FOSSIL) (Nikitin, 1888 †) Greenland
Sonneratia janeti (FOSSIL) de Grossouvre 1894 †
Cleoniceras janneli (FOSSIL) (Parent, 1894 †) France, Ardenne
Neogastroplites kamchatkensis (FOSSIL) Alabushev & Wiedmann,1994 † Russia, Kamchatka, Penzhinskiy
Sonneratia kitchini (FOSSIL) Spath, 1925 † UK, England
Sonneratia kitchini chalensis (FOSSIL) T.L. Casey † UK, England, Norfolk
Sonneratia kitchini ovalis (FOSSIL) T.L. Casey † UK, England, Bedfordshire
Euhoplites lautus (FOSSIL) (J. de C. Sowerby,1821 †) France, Calais37 mm
Leconteites lecontei (FOSSIL) (Anderson, 1902 †)
Cleoniceras leightonense (FOSSIL) Spath, 1942 † Russia, Kamchatka, Penzhinskiy
Callihoplites leptus (FOSSIL) (Seeley, 1865 †) UK, Cambridgeshire
Stelckiceras liardense (FOSSIL) (J.J.F. Whiteaves,1889 †) Canada, British Columbia, Northern Rockies
Lemuroceras linaensis (FOSSIL) McLearn, 1972 †
Semenovites litskovi (FOSSIL) † Kazakhstan66 mm
Euhoplites loricatus (FOSSIL) Spath, 1925 † UK, England23 mm
Euhoplites loxicatus (FOSSIL) Spath † England, Kent
Neogastroplites maclearni (FOSSIL) Reeside & Cobban, 1960 †
Cleoniceras madagascariense (FOSSIL) (M. Collignon, 1949 †) Madagascar100 mm
Hoplites maritimus (FOSSIL) B. Owen, 1971 †
Otohoplites maxinae (FOSSIL) Casey † UK, England, Surrey
Subarcthoplites mcconnelli (FOSSIL) (J.J.F. Whiteaves,1893 †) Russia, Niklekujul River
Epihoplites metamorphicus (FOSSIL) (Spath, 1926 †) France, Calais96 mm
Semenoviceras michalskii (FOSSIL) (Semenov, 1899 †) Iran, Razavi Khorasan, Mashhad
Protohoplites michelinianus (FOSSIL) (A.V.M.D. D'Orbigny,1841 †) France, Ardenne54 mm
Euhoplites microceras (FOSSIL) (Spath 1925 †)