Merelina saginata (FOSSIL) C.R. Laws, 1939 †
Merelina superba A.W.B. Powell, 1927 New Zealand
Merelina taupoensis A.W.B. Powell, 1939 New Zealand, North Island2 mm
Merelina telkibana (FOSSIL) H.S. Ladd, 1966 †
Merelina tessellata (G. Schwartz, 1860) Italy, Livorno3 mm
Merelina tokunagai (M. Yokoyama, 1927) Japan
Merelina tricarinata (A.W.B. Powell, 1937) New Zealand
Merelina waiotemarama (FOSSIL) C.R. Laws, 1948 †
Merelina waitangiensis A.W.B. Powell, 1933 New Zealand
Mohrensternia andrusovi (FOSSIL) (Iljina in Roshka,1973 †)
Mohrensternia angulata (FOSSIL) (K.E.I. von Eichwald,1830 †)
Mohrensternia banatica (FOSSIL) E. Jekelius, 1944 †
Mohrensternia friedbergi (FOSSIL) V.V. Anistratenko, 2005 †
Mohrensternia hollabrunnensis (FOSSIL) T. Kowalke& M. Harzhauser, 2004 †
Mohrensternia hydrobioides (FOSSIL) Hilber, 1897 †
Mohrensternia moesinensis (FOSSIL) E. Jekelius, 1944 †
Mohrensternia nitida (FOSSIL) Zhizhchenko, 1936 †
Mohrensternia perinflata (FOSSIL) Friedberg, 1923 †
Mohrensternia pfaffstaettensis (FOSSIL) T. Kowalke& M. Harzhauser, 2004 †
Mohrensternia politioanei (FOSSIL) E. Jekelius, 1944 †
Mohrensternia sarmatica (FOSSIL) Friedberg, 1923 †
Mohrensternia soceni (FOSSIL) E. Jekelius, 1944 †
Mohrensternia subprotogena (FOSSIL) Zhizhchenko, 1936 †
Mohrensternia waldhofensis (FOSSIL) T. Kowalke& M. Harzhauser, 2004 †
Obtusella babylonia (C.B. Adams, 1845) Bahamas
Obtusella cantrainei F. Nordsieck, 1972 Mediterranean Sea
Obtusella communis (O. Böttger, 1906)
Obtusella erinacea (C. Linnaeus, 1758)
Obtusella intersecta (W. Wood, 1857) Spain2 mm
Obtusella isseli (G.W. Tryon, 1886) Europe
Obtusella lata E. Rolán & F. Rubio, 1999 Cape Verde1 mm
Obtusella macilenta (T.A. de M. Monterosato,1880) Italy, Cesenatico1,1 mm
Obtusella magna (J.H. Gatliff& C.J. Gabriel, 1911) Australia
Obtusella orisparvi (FOSSIL) Moreno, A. Peñas& E. Rolán, 2003 †
Obtusella roseotincta (P. Dautzenberg, 1889) Azores