Genus Trigonulina A. d'Orbigny, 1846

(3-2-4-0-2-3-0-30-0-0-0-0-0)
[=Verticordia G. B. Sowerby, 1844 [J. E. Gray, 1842]]
Syn. Trigoniluna J. C. Chenu, 1862
Ref. Vokes, 1980 p 213
[see also as Subgenus under Genus Verticordia]
Ref. Abbott, 1974 p 563