HYRIIDAE Swainson, 1840
Swainson, 1840, Treat. Malacol.: 379.
Agassiz, 1845, Nom. Syst. Gen. Moll.: 43.
Type genus: Hyria Lamarck, 1819 = Prisodon

HYRIIDAE Swainson, 1840
Swainson, 1840, Treat. Malacol.: 268, 282, 287, 379 [as ‘Hyrinæ’ and ‘Hyrianæ’].
Ortmann, 1910, Nautilus 23: 115 [as ‘Hyriinæ’].
Ortmann, 1911, Nautilus 24(9): 130.
(correct name for Hyridae Swainson, 1840)
Type genus: Hyria Lamarck, 1819 = Prisodon

HYRIDAE Swainson, 1840
Swainson, 1840, Treat. Malacol.: 268, 282.
Modell, 1964, Arch. Moll. 93: 103.
(name corrected to Hyriidae Swainson, 1840)
Type genus: Hyria Lamarck, 1819 = Prisodon

HYRIOIDAE Agassiz, 1846
Agassiz, 1846, Nomencl. Zool. Index Univ.: 192.
Type genus: Hyria Lamarck, 1819 = Prisodon

HYRIDINIDAE Carpenter, 1861
Carpenter, 1861, Lectures on the Mollusca: ??.
Type genus: Hyria Lamarck, 1819 = Prisodon

DIPLODONTIDAE Ihering, 1901
Ihering, 1901, Nautilus 15(5): 52-53 [as’ Diplodontinæ’].
Parodiz & Bonetto, 1963, Malacologia 1(2): 199, 205.
Type genus: Diplodon Wagner, 1827 = Diplodon

CUCUMERUNIIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 77.
(name corrected to Cucumerunionidae Iredale, 1934)
Type genus: Cucumerunio Iredale, 1934 = Cucumerunio

CUCUMERUNIONIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 77 [as ‘Cucumerunionae’].
Modell, 1942, Arch. Moll. 74(5/6): 184.
(correct name for Cucumeruniidae Iredale, 1934)
Type genus: Cucumerunio Iredale, 1934 = Cucumerunio

LORTIELLIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 77.
Iredale, 1934, Austral. Zool. 8: 58, 77.
Iredale, 1943, Austral. Zool. 10: 190.
Type genus: Lortiella Modell, 1942 = Lortiella

PROPEHYRIDELLIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 76-77.
Iredale, 1943, Austral. Zool. 10: 189.
Iredale, 1943, Austral. Natural. 11: 87.
Type genus: Propehyridella Cotton & Gabriel, 1932 = Hyridella

VELESUNIIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 76.
Iredale, 1943, Austral. Zool. 10: 189.
(name corrected to Velesunionidae Iredale, 1934)
Type genus: Velesunio Iredale, 1934 = Velesunio

VELESUNIONIDAE Iredale, 1934
Iredale, 1934, Austral. Zool. 8: 58, 76 [as ‘Velesunionae’].
Modell, 1942, Arch. Moll. 74(5/6): 178.
Iredale, 1943, Austral. Zool. 10: 189 [as ‘Velesunionae’].
(correct name for Velesuniidae Iredale, 1934)
Type genus: Velesunio Iredale, 1934 = Velesunio

PRISODONTIDAE Modell, 1942
Modell, 1942, Arch. Moll. 74(5/6): 174.
Morretes, 1949, Arqu. Mus. Paranaense 7: 17, 23.
Modell, 1964, Arch. Moll. 93: 80.
Type genus: Prisodon Schumacher, 1817 = Prisodon

CASTALIIDAE Morretes, 1949
Morretes, 1949, Arqu. Mus. Paranaense 7: 21.
Parodiz & Bonetto, 1963, Malacologia 1(2): 201, 204.
Type genus: Castalia Lamarck, 1819 = Castalia

HYRIDELLIDAE McMichael, 1956
McMichael, 1956, Nautilus 70(2): 42.
McMichael, 1958, Trans. Roy. Soc. New Zealand 85: 427.
McMichael & Hiscock, 1958, Austral. J. Mar. Frwtr. Res. 9(3): 435.
Type genus: Hyridella Swainson, 1840 = Hyridella

RHIPIDODONTIDAE Starobogatov, 1970
Starobogatov, 1970, Fauna Moll. Continent.: 72.
Type genus: Rhipidodonta Mörch, 1853 = Diplodon