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Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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Bivalvia | Unionoida | Unionoidea | Unionidae | Gonideinae | Contradentini | Lens

species Lens eximius (Lea, 1856): synonymy
     97 specimens + 22 Genbank vouchers

Unio eximius Lea, 1856
Lea, 1856. Proc. Acad. Nat. Sci. 8: 93.
Lea, 1857. Jour. Acad. Nat. Sci. 3 [O. 6]: 294 [14], pl. 25, fig. 8.
Type(s): LECTOTYPE USNM_83900, Siam.

Physunio (sec. Lens) eximiusSimpson (1900)
Physunio (Lens) eximiusSimpson (1914), Haas (1969)
Physunio (s.s.) eximiusHaas (1919), Haas (1969)
Physunio eximiusvan Benthem Jutting (1953), Brandt (1974), Graf & Cummings (2007), Sri-aroon et al. (2007), Bogan (2010), IUCN (2012), He & Zhuang (2013), Zieritz et al. (2018), Sahidin et al. (2021)
Physunio cf. eximiusBolotov et al. (2017)
Contradens eximiusBolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020), Zieritz et al. (2020), Graf & Cummings (2021)
Lens eximiusPfeiffer et al. (2021), Zieritz et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023), Wu et al. (2024), Liu et al. (2024), Zieritz et al. (2024), Wu et al. (2024)
Physunio sp. 1Wu et al. (2021)

Unio semiquadrata Sowerby, 1866
Sowerby, 1866. Conch. Icon. 16: pl. 48, sp. 258.
Type(s): SYNTYPES BMNH_1968658, Lao Mountains, Camboja.

Physunio (sec. Lens) eximiusSimpson (1900)
Physunio (Lens) eximiusSimpson (1914)
Physunio (s.s.) eximiusHaas (1919), Haas (1969)
Physunio eximiusBrandt (1974), IUCN (2012), He & Zhuang (2013)
Lens eximiusPfeiffer et al. (2021)

Taxonomic History (since 1900)

Physunio (sec. Lens) eximiusSimpson (1900)
Physunio (Lens) eximiusSimpson (1914), Haas (1969)
Physunio (s.s.) eximiusHaas (1919), Haas (1969)
Physunio eximiusvan Benthem Jutting (1953), Brandt (1974), Graf & Cummings (2007), Sri-aroon et al. (2007), Bogan (2010), IUCN (2012), He & Zhuang (2013), Zieritz et al. (2018), Sahidin et al. (2021)
Physunio cf. eximiusBolotov et al. (2017)
Contradens eximiusBolotov et al. (2017), Bolotov et al. (2018), Huang et al. (2019), Konopleva et al. (2019), Konopleva et al. (2019), Bolotov et al. (2020), Zieritz et al. (2020), Graf & Cummings (2021)
Lens eximiusPfeiffer et al. (2021), Zieritz et al. (2021), Bolotov et al. (2022), Konopleva et al. (2023), Wu et al. (2024), Liu et al. (2024), Zieritz et al. (2024), Wu et al. (2024)
Physunio sp. 1Wu et al. (2021)

 
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