Subgenus (Spisula) J. E. Gray, 1837
(3-4-4-0-21-3-2-41-19-0-0-0-0) [see also as Genus] grayana L. Schrenck, 1867 (3-4-4-0-21-3-2-41-19-1-0-0-0) [=Mactromeris polynyma (W. Stimpson, 1860)] Ref. Bernard, 1983 p 40
(3-4-4-0-21-3-2-41-19-0-0-0-0) [see also as Genus]
grayana L. Schrenck, 1867 (3-4-4-0-21-3-2-41-19-1-0-0-0) [=Mactromeris polynyma (W. Stimpson, 1860)] Ref. Bernard, 1983 p 40