Subgenus (Verticordia) ex Wood, ms, G. B. Sowerby, 1844 [J. E. Gray, 1842]

(3-2-4-0-2-3-0-34-5-0-0-0-0)
Syn. (Trigonulina) A. d'Orbigny, 1846
Ref. Keen, 1971 p 302

acuticostata R. A. Philippi, 1884
(3-2-4-0-2-3-0-34-5-1-0-0-0)
Sharp-ribbed Verticord
Size 0.5"
Ref. Abbott, 1974 p 563
Abbott & Dance, 1982 p 375 c
Amer. Fish. Soc., 1988 p 49

aequacostata A. Howard, 1950
(3-2-4-0-2-3-0-34-5-2-0-0-0)
Size 0.25" long
Ref. Abbott, 1974 p 563
Keen, 1971 p 302 d

caelata A. E. Verrill, 1884
(3-2-4-0-2-3-0-34-5-3-0-0-0)
[=Verticordia (Trigonulina) ornata (A. d'Orbigny, 1842)]
Ref. Abbott, 1974 p 563

cardiiformis G. B. Sowerby, 1844 [f][T]
(3-2-4-0-2-3-0-34-5-4-0-0-0)
[Pliocene of England]
Ref. Abbott, 1974 p 563

elegantissima W. H. Dall
(3-2-4-0-2-3-0-34-5-5-0-0-0)
Elegant Verticord
Size 0.5" long
Ref. Morris, 1973 p 106 bw

granulifera (A. E. Verrill, 1885)
(3-2-4-0-2-3-0-34-5-6-0-0-0)
Ref. Abbott, 1974 p 563 d

? hancocki F. R. Bernard, 1969
(3-2-4-0-2-3-0-34-5-7-0-0-0)
Size 0.25" long
Ref. Keen, 1971 p 302 bw

ornata (A. d'Orbigny, 1846) [(1842)]
(3-2-4-0-2-3-0-34-5-8-0-0-0)
Ornate Verticord
Size 0.25" long
Ref. Amer. Fish. Soc., 1988 p 49
Keen, 1971 p 302 d
Morris, 1973 p 106 bw

perversa W. H. Dall, 1886
(3-2-4-0-2-3-0-34-5-9-0-0-0)
Ref. Abbott, 1974 p 563 d

seguenzae W. H. Dall, 1886
(3-2-4-0-2-3-0-34-5-10-0-0-0)
Seguenza Verticord
Ref. Abbott, 1974 p 563
Amer. Fish. Soc., 1988 p 49

trapezoides G. Seguenza, 1876
(3-2-4-0-2-3-0-34-5-11-0-0-0)
Trapezoid Verticord
Ref. Abbott, 1974 p 563
Amer. Fish. Soc., 1988 p 49

woodii E. A. Smith, 1885
(3-2-4-0-2-3-0-34-5-12-0-0-0)
Wood Verticord
Ref. Abbott, 1974 p 563
Amer. Fish. Soc., 1988 p 49