Genus Lamellidens Simpson, 1900

(type species: Unio marginalis Lamarck, 1819; by original designation) (Simpson 1900).

(Figs 4B–G, 5A–G)

Comments: This genus contains 13 recent species (Bolotov et al. 2022a, b). Two widespread and one putative local species were recorded from Assam (Table 1).