Alaba (Gibborissoa) Cossmann, 1921 accepted as Alaba (Gibborissoia) Sacco, 1895 accepted as Gibborissoia Sacco, 1895 (original description)
Alcidiella Cossmann, 1921 accepted as Alvania Risso, 1826 (original description)
Alvania bonneti Cossmann, 1921 † (original description)
Alvania littorinoides Cossmann, 1921 † (original description)
Alvania sacyi Cossmann, 1921 † (original description)
Alvania urgonensis Cossmann, 1918 † (basis of record)
Amnicola (Amnicola) moguntina O. Boettger, 1884 † accepted as Valvata moguntina (O. Boettger, 1884) † (new combination reference)
Amnicola moguntina O. Boettger, 1884 † accepted as Valvata moguntina (O. Boettger, 1884) † (new combination reference)
Anisocycla rutoti Cossmann, 1921 † accepted as Ebala rutoti (Cossmann, 1921) † (original description)
Bithinia vidali Cossmann, 1921 † accepted as Bithynia vidali Cossmann, 1921 † (original description)
Buvignieria Cossmann, 1921 † (original description)
Calvadosia Cossmann, 1921 † accepted as Calvadosiella Wenz, 1939 † (original description)
Capuloidea J. Fleming, 1822 (additional source)
Ceratia convexispira Cossmann, 1921 † (original description)
Goniatogyra Cossmann, 1921 † (original description)
Leaella Cossmann, 1921 † (original description)
Manzonia (Taramellia) subspinicosta Cossmann, 1921 † accepted as Alvania aquensis (Grateloup, 1838) † (original description)
Manzonia boettgeri Cossmann, 1921 † (original description)
Manzonia equestris (Bonelli) † (new combination reference)
Manzonia subspinicosta Cossmann, 1921 † accepted as Alvania aquensis (Grateloup, 1838) † (original description)
Miraldiella Cossmann, 1921 accepted as Pseudoscilla O. Boettger, 1902 (original description)
Miraldiella exarata (P. P. Carpenter, 1857) accepted as Pseudoscilla exarata (P. P. Carpenter, 1857) (new combination reference)
Nisostomia Cossmann, 1921 † accepted as Ondina de Folin, 1870 (original description)
Nisostomia (Nisostomia) Cossmann, 1921 † accepted as Ondina de Folin, 1870 (original description)
Nisostomia mogutensis Cossmann, 1921 † accepted as Odostomia acutiuscula (A. Braun, 1851) † (original description)
Nystia romani Cossmann, 1921 † (original description)
Odontostomia (Nisostomia) Cossmann, 1921 † accepted as Ondina de Folin, 1870 (original description)
Odontostomia cerullii Cossmann, 1921 † accepted as Ondina cerullii (Cossmann, 1921) † (original description)
Odontostomia praenominata Cossmann, 1921 † accepted as Brachystomia praenominata (Cossmann, 1921) † (original description)
Odostomia (Pyramistomia) Cossmann, 1921 accepted as Pyramistomia Cossmann, 1921 (original description)
Odostomia (Sinustomia) Cossmann, 1921 † represented as Odostomia J. Fleming, 1813 (original description)
Paladilhia (Lartetella) Cossmann, 1921 † represented as Paladilhia Bourguignat, 1865 (original description)
Pezantia Cossmann, 1896 † (basis of record)
Pisinna Monterosato, 1878 (subsequent type designation)
Polygyreulima accepted as Polygireulima Sacco, 1892 (basis of record)
Potamaclis forbesii (J. Morris, 1856) † (additional source)
Pyrgolamprus Cossmann, 1921 accepted as Pyrgolampros Sacco, 1892 accepted as Turbonilla Risso, 1826 (original description)
Pyrgulina (Parthenina) dollfusi Cossmann, 1921 † accepted as Parthenina pacaudi Landau & Micali, 2021 † (original description)
Pyrgulina alpinoligustica Sacco, 1892 accepted as Spiralina alpinoligustica (Sacco, 1892) (basis of record)
Pyrgulina brusinai Cossmann, 1921 accepted as Spiralinella incerta (Milaschewitsch, 1916) accepted as Spiralina alpinoligustica (Sacco, 1892) (original description)
Rissoa cureti Cossmann, 1918 † (basis of record)
Rissoa equestris Bonelli † accepted as Manzonia equestris (Bonelli) † (basis of record)
Rissoa jurensis Etallon, 1862 † (basis of record)
Rissoa spinosa Seguenza † (basis of record)
Rissoina (Leaella) Cossmann, 1921 † represented as Rissoina d'Orbigny, 1841 (original description)
Rissoina acuticarina (Blake, 1880) † accepted as Buvignieria acuticarina (Blake, 1880) † (basis of record)
Rissoina dactyliosa (Deshayes, 1861) † accepted as Pezantia dactyliosa (Deshayes, 1861) † (basis of record)
Rissoina duplicata (J. de C. Sowerby, 1829) † (basis of record)
Rissoina gaasensis Cossmann, 1921 † (original description)
Rissoina guppyi Cossmann, 1921 † (original description)
Rissoina milleri Lycett, 1863 † accepted as Buvignieria milleri (Lycett, 1863) † (additional source)
Rissoina moloti (Cossmann, 1907) † accepted as Pseudotaphrus moloti Cossmann, 1907 † (basis of record)
Rissoina morleti de Raincourt † (basis of record)
Rissoina multistriata Piette, 1855 † (basis of record)
Rissoina obliquata (J. de C. Sowerby, 1829) † accepted as Palaeorissoina obliquata (J. de C. Sowerby, 1829) † accepted as Bralitzia obliquata (J. de C. Sowerby, 1829) † (basis of record)
Rissoina obtusa Lycett, 1850 † (additional source)
Rissoina podolica Cossmann, 1921 † (original description)
Rissoina transversaria Deshayes, 1861 † (additional source)
Rissoina tricarinata J. Morris & Lycett, 1851 † (basis of record)
Rissoina unicarina (Buvignier, 1843) † accepted as Buvignieria unicarina (Buvignier, 1843) † (new combination reference)
Rissoina valfini (Guirand & Ogérien, 1865) † accepted as Rissoa valfini Guirand & Ogérien, 1865 † (new combination reference)
Robicia (Annulifer) Cossmann, 1921 † accepted as Annulifer Cossmann, 1921 † (original description)
Stossichia haudcostulata "Boettger" Cossmann, 1921 † (basis of record)
Stossicia Cossmann, 1921 accepted as Stosicia Brusina, 1871 (basis of record)
Stossicia Cossmann, 1921 accepted as Stosicia Brusina, 1871 (original description)
Stylifer P. Fischer, 1864 accepted as Stilifer Broderip, 1832 (additional source)
Syrnola (Puposyrnola) Cossmann, 1921 accepted as Puposyrnola Cossmann, 1921 (original description)
Trochoturbella Cossmann, 1921 † (original description)
Trochoturbella (Calvadosia) brasili Cossmann, 1921 † accepted as Calvadosiella brasili (Cossmann, 1921) † (original description)
Trochoturbella moreyensis (Cossmann, 1885) † (basis of record)
Turbella inflexicosta Cossmann, 1921 † accepted as Turboella inflexicosta Cossmann, 1921 † accepted as Rissoa inflexicosta (Cossmann, 1921) † (original description)
Turbella tenuilineata Cossmann, 1921 † accepted as Turboella tenuilineata Cossmann, 1921 † accepted as Rissoa tenuilineata (Cossmann, 1921) † (original description)
Valvata indecisa Cossmann, 1924 † (additional source)
Valvata subparvula Cossmann, 1921 † accepted as Gyraulus parvulus (Meek & Hayden, 1856) † (original description)
Viviparus (Paludotrochus) Cossmann, 1921 † represented as Viviparus Montfort, 1810 (original description)

France for Anisocycla rutoti Cossmann, 1921 † 
France for Ceratia convexispira Cossmann, 1921 † 
France for Manzonia (Taramellia) subspinicosta Cossmann, 1921 † 
France for Nystia romani Cossmann, 1921 † 
France for Odontostomia praenominata Cossmann, 1921 † 
France for Pyrgulina (Parthenina) dollfusi Cossmann, 1921 † 
Spain for Bithinia vidali Cossmann, 1921 † 

 Taxonomic remark

 for Pezantia Cossmann, 1896 †

The type species seems to belong to Zebinella (Rissoinidae). Therefore, Pezantia is provisionally regarded as a ... [details]

 Taxonomy

 for Dieretostoma Cossmann, 1888 †

treated as a senior synonym of Romania Cossmann, 1913 (family Hydrobiidae) by Cossmann (1921: 124); as a valid ... [details]

 Type locality

 for Bithinia vidali Cossmann, 1921 †

Teruel, Teruel, Spain; Oligocene [details]

 Type locality

 for Nystia romani Cossmann, 1921 †

Saint-Césaire-de-Gauzignan, Gard, France; early Rupelian, early Oligocene [details]

 Type species

 for Trochoturbella moreyensis (Cossmann, 1885) †

Type of the genus by original designation [details]