Haplotrematidae
Haplotrema alameda Pilsbry, 1930
Haplotrema caelatum (Mazyck, 1886)
Haplotrema catalinense (Hemphill, 1890)
Haplotrema concavum (Say, 1821)
Haplotrema continentis H. B. Baker, 1930
Haplotrema costatum A. G. Smith, 1957
Haplotrema duranti (Newcomb, 1864)
Haplotrema keepi (Hemphill, 1890)
Haplotrema kendeighi Webb, 1951
Haplotrema minimum (Ancey, 1888)
Haplotrema mokelumnense Roth, 1990
Haplotrema sportella (Gould, 1846)
Haplotrema transfuga (Hemphill, 1892)
Haplotrema vancouverense (I. Lea, 1839)
Haplotrema voyanum (Newcomb, 1864)