Pholadomyoida
Asthenothaerus Carpenter, 1864
Barythaerus Marshall, 2002
Bathythaerus
Bushia Dall, 1886
Cochlodesma Couthouy, 1839
Corirnya Agassiz, 1843
Coritnija Agassiz, 1843
Coromya Agassiz, 1846
Corymya Agassiz, 1843
Cyathodonta Conrad, 1849
Eximiothracia Iredale, 1924
Ixartia Gray, 1852
Lampeia MacGinitie, 1959
Nipponothracia Kanie & Sakai, 1997
Parvithracia Finlay, 1926
Pelopina Huber, 2010
Phragmorisma Tate, 1894
Thracia Leach, 1823
Thracidentula Garrard, 1961
Thracidora Iredale, 1924
Thraciopsis Tate & May, 1900
Trigonothracia Yamamoto & Habe, 1959