Monocondylus tumidus Morelet, 1866
Morelet, 1866. J. de Conch. 14: 62.
Morelet, 1875. Séries Conch. 4: 337, pl. 16, fig. 1 [as ‘Pseudodon’].
Type(s): HOLOTYPE BMNH_93-2-4-1734, Cambodia.

Pseudodon (s.s.) tumidus — Simpson (1900), Preston (1912), Simpson (1914), Haas (1924)
Pseudodon (s.s.) cumingii — Haas (1969)
Pseudodon vondembuschianus tumidus — Brandt (1974)
Pseudodon (Monodontina) tumidus — Graf & Cummings (2007)
Pseudodon tumidus — Zieritz et al. (2018)
Sundadontina tumida — Bolotov et al. (2020), Graf & Cummings (2021), Konopleva et al. (2021), Jeratthitikul et al. (2021), Konopleva et al. (2023), Bolotov et al. (2023), Jeratthitikul et al. (2024), Jeratthitikul et al. (2025)

Pseudodon vondembuschianus Walker et al., 2006
‘Lea’ of Authors.
Walker et al., 2006. Malacologia 48(1-2): 271.
Whelan et al., 2011. MPE 61: 508. [in part]
Araujo et al., 2017. Zool. J. Linn. Soc. 179(2): 281.
(misidentified reference to Margaritana vondembuschiana Lea, 1840)

Pseudodon inoscularis Pfeiffer & Graf, 2013
‘Gould’ of Authors.
Pfeiffer & Graf, 2013. J. Moll. Studies 79: 251.
Pfeiffer & Graf, 2015. Zool. J. Linn. Soc. 175(2): 310.
Konopleva et al., 2017. Systemat. Biodiv. 15(3): 207.
Bolotov et al., 2017. Sci. Repts. 7: Table S1 [as ‘Pseudodon cf. inoscularis’].
Bolotov et al., 2017. Sci. Repts. 7: Table S1 [as ‘ “Monodontina” cf. inoscularis sp. 2’].
Huang et al., 2019. MPE 130: Table S4 [as ‘ “Monodontina” cf. inoscularis sp. 2’].
Lopes-Lima et al., 2020. MPE 146: Table 1 [as ‘ “Monodontina” cf. inoscularis sp. 2’].
(misidentified reference to Anodon inoscularis Gould, 1844)

Pseudodon inoscularis Bolotov et al., 2017
‘Gould’ of Authors.
Bolotov et al., 2017. Sci. Repts. 7: Table S1 [as ‘Pseudodon aff. inoscularis sp. 1].
Bolotov et al., 2017. Sci. Repts. 7: Table S1 [as ‘ “Monodontina” aff. inoscularis sp. 1].
Huang et al., 2019. MPE 130: Table S4 [as ‘ “Monodontina” aff. inoscularis sp. 1].
(misidentified reference to Anodon inoscularis Gould, 1844)