Thracia septentrionalis Jeffreys, 1872, [Basis of the current name] Range: 60°N to 41°N Depth: 53 to 110 m Distribution: USA: Rhode Island Comments: New name for Thracia truncata Mighels & Adams, 1842, non T. Brown, 1827.
Thracia crassa Becher, 1886, [Synonym] References: Coan et al. (2000) s
Thracia seminuda Scarlato, 1981, [Synonym] References: Coan et al. (2000) s
Macoma truncaria Dall, 1916, [Synonym] References: Coan et al. (2000) s
Thracia truncata Mighels & Adams, 1842, [Objective synonym of valid name] Range: 60°N to 41.2°N; 71.9°W to 55°W Maximum Reported Size: 19 mm Distribution: Greenland; Canada: Nova Scotia, New Brunswick; USA: Maine, Massachusetts, Georges Bank, Rhode Island, Connecticut References: Mighels & Adams (1842) M; Linsley (1845) W; Procter (1933) NSEW Comments: Non Anatina truncata Turton, 1822, a Thracia.
