Genus Mesodesma G. P. Deshayes, 1831[1832]+

(3-4-4-0-21-4-3-12-0-0-0-0-0)
Ref. Abbott, 1974 p 492
Abbott & Dance, 1982 p 337
Amer. Fish. Soc., 1988 p 40
Bernard, 1983 p 41
Lindner, 1977 p 111
[valid ICZN Op. 1141]
Syn. Meradesma A. A. Gould, 1855
Ref. Vokes, 1980 p 246
[see also as Subgenus under Genus Paphies]

arctatum (T. A. Conrad, 1830)
(3-4-4-0-21-4-3-12-0-1-0-0-0)
Arctic Wedge Clam, Arctic Wedgeclam
Ref. Abbott, 1974 p 493
Abbott & Dance, 1982 p 337 c
Amer. Fish. Soc., 1988 p 40

deauratum (W. H. Turton, 1822)
(3-4-4-0-21-4-3-12-0-2-0-0-0)
Gilded Wedgeclam, Turton's Wedge Clam
Ref. Amer. Fish. Soc., 1988 p 40
Syn. Mactra (Mactra) denticulata Wood, 1828;
Mactra (Mactra) jauresii De Joannis, 1834
Ref. Abbott, 1974 p 493

donacium [donacia] (J. B. P. A. de Lamarck, 1818) [T]
(3-4-4-0-21-4-3-12-0-3-0-0-0)
Giant Wedge Clam
Ref. Abbott, 1974 p 492
Abbott & Dance, 1982 p 337 c
Syn. Donacilla chilensis A. Orbigny, 1856;
Mactra (Mactra) donacia J. B. P. A. de Lamarck, 1818;
Mactra (Mactra) lanceolata G. P. Deshayes, 1854
Ref. Bernard, 1983 p 41

mactroides G. P. Deshayes, 1854
(3-4-4-0-21-4-3-12-0-4-0-0-0)
Marisco Wedge Clam
Ref. Abbott & Dance, 1982 p 337 c