Family: UNGULINIDAE [Diplodon clams] H. & A. Adams, 1857

(3-4-4-0-20-7-0-0-0-0-0-0-0)
Ref. Abbott & Dance, 1982 p 322
Amer. Fish. Soc., 1988 p 36
Bernard, 1983 p 30
Lindner, 1977 p 107
Vaught, 1989 p xi,125
Vokes, 1980 p 107,240
[=DIPLODONTIDAE W. H. Dall, 1895]
Ref. Abbott, 1974 p 464
Keen, 1971 p 126