simulata, Bivibranchia Géry [J.], Planquette [P.] & Le Bail [P.-Y.] 1991:23, Pl. 7 (fig. 1) [Cybium v. 15 (no. 1, suppl.); ref. 21021] Panacupelu, Moutouci Fall, Wilapaleya, French Guiana. Holotype: MNHN 1981.0545 [one of three, 138 mm]. Paratypes (includes some non-types): (orig. 66) ?IRSNB 672-676 (46, 2, 2, 1, 1); MNHN 1981-0250 (1), 1981-0545 (2 of 3), 1981-0548 (1), 1981-0549 (1); MTD F 27516 [ex Géry coll.] (1); RMNH 28050-53 (2, 1, 2, 1), 28055-56 (10, 54). Non-types: (79). Type catalog: Zarske 2003:22 [ref. 27474]. •Valid as Bivibranchia simulata Géry, Planquette & Le Bail 1991 -- (Planquette et al. 1996:96 [ref. 22818], Langeani in Reis et al. 2003:97 [ref. 27061], Nogueira et al. 2021:7 [ref. 38941], Langeani 2024:365 [ref. 40817]). Current status: Valid as Bivibranchia simulata Géry, Planquette & Le Bail 1991. Hemiodontidae. Distribution: South America: Coppename, Nickerie, Suriname, and Oyapock River basins (Brazil and French Guiana). Habitat: freshwater.