Stylommatophora
Euglandina P. Fischer & Crosse, 1870
Mayaxis Thompson, 1995
Myxastyla Thompson, 1995
Pittieria Martens, 1901
Poiretia Fischer, 1883
Pseudosubulina Strebel & Pfeffer, 1882
Rectaxis Baker, 1926
Spiraxis C.B. Adams, 1850
Streptostylus Fischer, 1883
Tornaxis Martens, 1898
Varicoturris Pilsbry, 1907
