Preston, H.B. 1909. New land and freshwater shells from West Africa. Annals and Magazine of Natural History 4 (8th series): 87-91, 10 figs. Available electronically.
Preston, 1909. Ann. Mag. Nat. Hist. 4: 88, pl. 4, fig. 3.
Preston, 1909. Ann. Mag. Nat. Hist. 4: 90, pl. 4, fig. 8.
Preston, 1909. Ann. Mag. Nat. Hist. 4: 89, pl. 4, fig. 4.
Preston, 1909. Ann. Mag. Nat. Hist. 4: 90, pl. 4, fig. 10.

Preston, 1909. Ann. Mag. Nat. Hist. 4: 89, pl. 4, fig. 6.
Type(s): PARATYPE MRAC_58578, Gabon.
Preston, 1909. Ann. Mag. Nat. Hist. 4: 90, pl. 4, fig. 9.

Preston, 1909. Ann. Mag. Nat. Hist. 4: 90, pl. 4, fig. 7.
Type(s): PARATYPE MRAC_57475, Bas-Congo.

Preston, 1909. Ann. Mag. Nat. Hist. 4: 89, pl. 4, fig. 5.
(renamed Unio (Nodularia) putzeysi Preston, 1912; homonym of Unio subniger Lea, 1857)
Type(s): HOLOTYPE MRAC_56798, Lower Belgian Congo.