Fasciolariidae Gray, 1853
Polygona abbotti (Snyder, 2003)
Polygona angulata (Röding, 1798)
Polygona bayeri (Petuch, 2001)
Polygona bernadensis (Bullock, 1974)
Polygona brevicaudata (Reeve, 1847)
Polygona concentrica (Reeve, 1847)
Polygona filosa (Schubert & Wagner, 1829)
Polygona infundibula (Gmelin, 1791)
Polygona jucunda (McGinty, 1940)
Polygona lactea (Matthews-Cascon, Matthews & Rocha, 1991)
Polygona martini (Snyder, 1988)
Polygona nemata (Woodring, 1928)
Polygona socorroensis (Hertlein & Strong, 1951)
Polygona tumens (Carpenter, 1856)
Polygona vermeiji (Petuch, 1986)
