Subgenus (Noetia) J. E. Gray, 1857

(3-7-3-0-1-3-1-11-3-0-0-0-0)
Ref. Bernard, 1983 p 16
Keen, 1971 p 52

magna F. S. MacNeil, 1938
(3-7-3-0-1-3-1-11-3-1-0-0-0)
Ref. Bernard, 1983 p 16
Keen, 1971 p 52 bw

? ponderosa (T. Say, 1822)
(3-7-3-0-1-3-1-11-3-2-0-0-0)
Ponderous Ark
Ref. Abbott & Dance, 1984 p 293 c

reversa (G. B. Sowerby, 1833)
(3-7-3-0-1-3-1-11-3-3-0-0-0)
Syn. Arca (Arca) hemicardium ex C. L. Koch, ms, R. A. Philippi, 1843;
Arca (Arca) reversa ex J. E. Gray, ms, G. B. Sowerby, 1833;
Noetia (Noetia) triangularis J. E. Gray,1857
Ref. Bernard 1983 p 16
Syn. Arca (Arca) hemicardium R. A. Philippi,1843;
Noetia (Noetia) triangularis J. E. Gray,1857
Ref. Keen, 1971 p 52 bw

triangularis J. E. Gray, 1857
(3-7-3-0-1-3-1-11-3-4-0-0-0)
[=Noetia (Noetia) reversa (G. B. Sowerby, 1833)]
Ref. Bernard, 1983 p 16
Keen, 1971 p 52