Order: Mytiloida J. B. Ferussac, 1822

(3-7-5-0-0-0-0-0-0-0-0-0-0
Ref. Abbott, 1974 p 428
Bernard, 1983 p 17
Lindner, 1977 p 100
Vaught, 1989 p xi,116
Vokes, 1980 p 22
Wagner, 1984 p 51
Syn. Dysodonta
Ref. Keen, 1971 p 57