Lucilla scintilla (R.T. Lowe, 1852) France, Ardèche
Helicodiscus shimeki L.R. Hubricht, 1962 Vermont, Bennington Coubty
Radiodiscus shimekii (H.A. Pilsbry, 1890) Iowa
Lucilla singleyana (H.A. Pilsbry, 1889) Italy, Timavo river2 mm
Lucilla subteres (FOSSIL) (S. Clessin, 1877 †) Serbia
Lilloiconcha superba (K.H.J. Thiele, 1927) Brazil, Rio de Janeiro3 mm
Chanomphalus tatei H.A. Pilsbry, 1903 Nicaragua
Helicodiscus theresa K.H.J. Thiele, 1927 Brazil
Radiodiscus thomei W.K. Weyrauch, 1965 Brazil
Helicodiscus tridens J.P.E. Morrison, 1935 Texas, Palo Pinto County1 mm
Helicodiscus triodus L.R. Hubricht, 1958 West Virginia
Zilchogyra twomeyi (J.J. Parodíz, 1954)
Radiodiscus vazi Á.L.M. da Fonseca& J.W. Thomé, 1995 Brazil, Sao Paulo
Radiodiscus villarricensis J.R. Miguel& G.M. Barker, 2009 Chile, Conception1,2 mm
Radiodiscus wygodzinskyi W.K. Weyrauch, 1965 Argentina, Tucuman
Zilchogyra zulmae F.A.W. Miquel, R. Ramírez& J.W. Thomé, 2004 Brazil