Adeorbis seguenzai [sic] accepted as Adeorbis seguenzianus Tryon, 1888 accepted as Megalomphalus depressus (G. Seguenza, 1876) (basis of record)
Calliostoma antwerpense Cossmann, 1918 † accepted as Calliostoma zizyphinum (Linnaeus, 1758) (original description)
Calliotropis ottoi (R. A. Philippi, 1844) (additional source)
Cenomanella Cossmann, 1918 † (original description)
Chilodonta (Agathodonta) Cossmann, 1918 † accepted as Agathodonta Cossmann, 1918 † (original description)
Chlorostoma (Neozelandia) huttoni Cossmann, 1918 accepted as Coelotrochus tiaratus (Quoy & Gaimard, 1834) (original description)
Coelobolma Cossmann, 1918 † (original description)
Coelobolma corbarica Cossmann, 1918 † (original description)
Collonia (Heniastoma) Cossmann, 1918 † represented as Collonia J. E. Gray, 1850 (original description)
Eumargarita (Solariella) antwerpensis Cossmann, 1918 † accepted as Solariella maculata S. V. Wood, 1842 † (original description)
Gibbula (Colliculus) courjaulti Cossmann, 1918 † accepted as Gibbula courjaulti Cossmann, 1918 † (original description)
Gibbula (Conotrochus) Pilsbry, 1889 accepted as Pagodatrochus D. G. Herbert, 1989 (subsequent type designation)
Gibbula (Moniliopsis) Cossmann, 1918 † accepted as Amonilea Cossmann, 1920 † (original description)
Gibbula megamagus Cossmann, 1918 † (original description)
Gibbula tumidiformis Cossmann, 1918 † (original description)
Leptothyra (Eutinochilus) Cossmann, 1918 † accepted as Eutinochilus Cossmann, 1918 † (original description)
Leucodiscus Cossmann, 1918 † (original description)
Monodonta (Incisilabium) Cossmann, 1918 † accepted as Incisilabium Cossmann, 1918 † (original description)
Padollus (Sulculus) H. Adams & A. Adams, 1854 accepted as Haliotis Linnaeus, 1758 (subsequent type designation)
Phasianella (Eucosmia) carpenteri Cossmann, 1918 accepted as Eulithidium typicum (Dall, 1908) (original description)
Proconulus (Metaconulus) Cossmann, 1918 † accepted as Metaconulus Cossmann, 1918 † (original description)
Pseudophasianus Cossmann, 1918 † (original description)
Pseudophasianus elatus (T. Fuchs, 1870) † (new combination reference)
Rissoina valfinensis (Guirand & Ogérien, 1865) † accepted as Rissoina valfini (Guirand & Ogérien, 1865) † accepted as Rissoa valfini Guirand & Ogérien, 1865 † (taxonomy source)
Teinostoma H. Adams & A. Adams, 1853 (subsequent type designation)
Tornus dollfusi Cossmann, 1918 † accepted as Tornus subcarinatus (Montagu, 1803) (original description)
Vexinia Cossmann, 1918 † (original description)

France for Coelobolma corbarica Cossmann, 1918 † 
France for Gibbula (Colliculus) courjaulti Cossmann, 1918 † 
France for Tornus dollfusi Cossmann, 1918 †