Bivalvia | ... | Unionoidea | Unionidae | Gonideinae | Rectidentini | Contradentina | Yaukthwa

Anthony, 1865. Amer. J. Conch. 1(4): 351, pl. 25, fig. 2.
Type(s): HOLOTYPE MCZ_161875, Pegu, British Burmah.
Trapezoideus foliaceus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), Prashad (1922), Haas (1969)
Trapezoideus exolescens exolescens — Brandt (1974)
Trapezoideus exolescens — He & Zhuang (2013)
Trapezoideus peguensis — Bolotov et al. (2017)
Yaukthwa peguensis — Konopleva et al. (2019), Bolotov et al. (2020), Pfeiffer et al. (2021), Graf & Cummings (2021)
Trapezoideus foliaceus — Simpson (1900), Preston (1912), Simpson (1914), Preston (1915), Haas (1919), Prashad (1922), Haas (1969)
Trapezoideus exolescens exolescens — Brandt (1974)
Trapezoideus exolescens — He & Zhuang (2013)
Trapezoideus peguensis — Bolotov et al. (2017)
Yaukthwa peguensis — Konopleva et al. (2019), Bolotov et al. (2020), Pfeiffer et al. (2021), Graf & Cummings (2021)