Bivalvia Linnaeus, 1758
Brachilyrodesma Pojeta & Gilbert-Tomlinson, 1977
Lyrodesma Conrad, 1841
Lyronucula Fischer, 1886
Megalomoidea Cox, 1964
Megalomus Hall, 1852
Megalomys Fischer, 1886
Mewalomus Kirk, 1927
Noradonta Pojeta & Gilbert-Tomlinson, 1977
Pseudarca Tromelin & Lebesconte, 1875
Pseudaxinus Salter, 1864
