Bivalvia | ... | Unionoidea | Unionidae | Gonideinae | Rectidentini | Rectidentina | Ensidens
107 specimens + 26 Genbank vouchers

Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 282, pl. 24, fig. 41.
Lea, 1852. Proc. Amer. Phil. Soc. 5: 251. [nomen nudum]
Type(s): HOLOTYPE USNM_85933, Siam.
Nodularia (s.s.) ingallsiana — Simpson (1900), Preston (1912), Simpson (1914)
Ensidens ingallsiana — Frierson (1911)
Ensidens (s.s.) ingallsianus — Haas (1913), Thiele (1934), Haas (1952), Haas (1969), Haas (1969)
Ensidens ingallsianus — F.R. Woodward (1969), Graf & Cummings (2007), Bogan (2010), IUCN (2012), Bogan & Do (2014), ... Zieritz et al. (2024), Jeratthitikul et al. (2024), Dai et al. (2024), Dai et al. (2025), Chen et al. (2025)
Ensidens ingallsianus ingallsianus — Brandt (1974), Deein et al. (2004)
Ensidens sp. — Sri-aroon et al. (2007)
Ensidens cf. ingallsianus — Bolotov et al. (2017), Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Zieritz et al. (2020)
Ensidens ingallsianus A1 — Muanta et al. (2019)
Ensidens ingallsianus A2 — Muanta et al. (2019)

Lea, 1862. Proc. Acad. Nat. Sci. 14: 176.
Lea, 1866. Jour. Acad. Nat. Sci. 6 [O. 11]: 61 [65], pl. 21, fig. 60.
Type(s): HOLOTYPE USNM_84708, Siam.
Nodularia (s.s.) pazii — Simpson (1900), Preston (1912), Simpson (1914)
Ensidens pazii — Frierson (1911), Konopleva et al. (2019), Bolotov et al. (2020), Graf & Cummings (2021)
Ensidens (s.s.) pazii — Haas (1913)
Ensidens (s.s.) ingallsianus — Haas (1969)
Ensidens ingallsianus — F.R. Woodward (1969), IUCN (2012), Pfeiffer et al. (2021)
Ensidens ingallsianus ingallsianus — Brandt (1974)
Nodularia (s.s.) pazii — Simpson (1900), Preston (1912), Simpson (1914)
Nodularia (s.s.) ingallsiana — Simpson (1900), Preston (1912), Simpson (1914)
Ensidens ingallsiana — Frierson (1911)
Ensidens pazii — Frierson (1911), Konopleva et al. (2019), Bolotov et al. (2020), Graf & Cummings (2021)
Ensidens (s.s.) ingallsianus — Haas (1913), Thiele (1934), Haas (1952), Haas (1969), Haas (1969)
Ensidens (s.s.) pazii — Haas (1913)
Ensidens ingallsianus — F.R. Woodward (1969), Graf & Cummings (2007), Bogan (2010), IUCN (2012), Bogan & Do (2014), ... Zieritz et al. (2024), Jeratthitikul et al. (2024), Dai et al. (2024), Dai et al. (2025), Chen et al. (2025)
Ensidens ingallsianus ingallsianus — Brandt (1974), Deein et al. (2004)
Ensidens sp. — Sri-aroon et al. (2007)
Ensidens cf. ingallsianus — Bolotov et al. (2017), Bolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Zieritz et al. (2020)
Ensidens ingallsianus A1 — Muanta et al. (2019)
Ensidens ingallsianus A2 — Muanta et al. (2019)