Aphaostracon theiocrenetus F.G. Thompson, 1968
Pyrgophorus thompsoni (FOSSIL) Wesselingh, 2006 †
Tryonia tornata (A. Adams, 1863)
Littoridina transitoria W.A. Biese, 1947
Tryonia tricarinata (O. Böttger, 1871)
Dyris tricarinatus (FOSSIL) Boettger, 1878 †
Eupaludestrina tritonum (J.R. Bourguignat, 1852)
Subcochliopa trochulus (E.C. Von Martens, 1899)
Subcochliopa trochus J.P.E. Morrison, 1946
Aroapyrgus tryoni (H.A. Pilsbry, 1904)
Cochliopina tryoniana (H.A. Pilsbry, 1890)
Heleobia tucumana (J.M. Gaillard, 1974)
Juturnia tularosae R. Hershler, H.P. Liu& W.P. Stockwell, 2002
Sioliella umbilicata (FOSSIL) Wesselingh, 2006 †
Heligmopoma umbilicatum F. Haas, 1955
Heleobia uruguayana (H.A. Pilsbry, 1924)
Balconorbis uvaldensis R. Hershler & A.J. Longley,1986
Tryonia variegata R. Hershler & D.W. Sada,1987
Onobops ventricosus (FOSSIL) Wesselingh, 2006 †
Zetekina veraguasensis (J.P.E. Morrison, 1946)
Heleobia vestita (H. Hass, 1955)
Heleobia vianai (J.J. Parodíz, 1960)
Aroapyrgus vivens (H.B. Baker, 1930)
Pyrgophorus vulcani (E.C. Von Martens, 1901)
Cochliopina wetmorei J.P.E. Morrison, 1946
Sioliella woodwardi (FOSSIL) D. Kadolsky, 1980 †
Aphaostracon xynoelictum F.G. Thompson, 1968
Tryonia zaragozae R. Hershler, H.P. Liu& J.J. Landye, 2011
Cochliopina zeteki J.P.E. Morrison, 1946