Aulacomya Mörch, 1853
Aulacomya ater (Molina, 1782) accepted as Aulacomya atra (Molina, 1782)
Aulacomya atra (Molina, 1782)
Brachidontinae F. Nordsieck, 1969
Dacrydiinae Ockelmann, 1983
Dacrydium Torell, 1859
Dacrydium albidum Pelseneer, 1903
Dacrydium modioliforme Thiele, 1912 accepted as Dacrydium albidum Pelseneer, 1903
Geukensia Van de Poel, 1959
Geukensia demissa (Dillwyn, 1817)
Mytilidae incertae sedis (temporary name )
Mytilinae Rafinesque, 1815
Mytiliseptinae B. Morton, 2020
Mytilus Linnaeus, 1758
Mytilus edulis Linnaeus, 1758
Semimytilus T. Soot-Ryen, 1955
Semimytilus algosus (Gould, 1850) accepted as Semimytilus patagonicus (Hanley, 1843)
Semimytilus patagonicus (Hanley, 1843)