Unionoida | Unionoidea | Unionidae | Gonideinae | Rectidentini | Rectidens sumatrensis nominal species Unio pahangensis E.A. Smith, 1899
 E.A. Smith, 1899, Proc. Malac. Soc. London 3: 315, text fig.
Type(s): HOLOTYPE (MONOTYPY) BMNH_99-9-4-1, Pahang River, Malay Pennisula.
= Rectidens sumatrensis Taxonomic Opinions
+ Rectidens sumatrensis (Dunker, 1852) — Pfeiffer et al., 2021
- OMITTED — Haas, 1969
= Rectidens pahangensis (Smith, E.A., 1899) — Simpson, 1914
+ Rectidens perakensis (Morgan, 1885) — Haas, 1914
= Rectidens pahangensis (Smith, E.A., 1899) — Simpson, 1900
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