Genus Throna P. P. Carpenter, 1859

(3-2-3-1-3-8-0-23-0-0-0-0-0)
[=Thracia G. B. Sowerby, 1823]
Ref. Abbott, 1974 p 558
[nomen nullum]
[=Thracia W. E. Leach in H. M. D. de Blainville, 1824]
Ref. Vaught, 1989 p 139