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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 | Unionida | Unionoidea | Unionidae | Ambleminae | Lampsilini

genus Truncilla Rafinesque, 1819: synonymy
     4 Recent valid species (4 total species)

Truncilla Rafinesque, 1819
Rafinesque, 1818. Amer. Mon. Mag. 4: 107 [nomen nudum].
Rafinesque, 1819. Jour. Phys. Chim. Hist. Nat. 88: 427.
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 300.
Rafinesque, 1831. Continuation: 4.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 24, 29, 45, 76.
(intro'd as sub-gen. of Unio Retzius, 1788)
Type species: Truncilla truncata Rafinesque, 1820 (sub. desig. by Herrmannsen, 1849: 628) = Truncilla truncata

Troncilla Menke, 1830
‘Rafinesque’ of Authors.
Menke, 1830. Syn. Method. Moll.: 106.
Rossmässler, 1835. Icon. Land- und Süssw.-Moll. 1 (1): 116.
(error for Truncilla Rafinesque, 1819)

Amygdalonaias Fischer & Crosse, 1894
Fischer & Crosse, 1894. Miss. Sci. Mexique, Rech. Zool. 2(15): 557.
(intro'd as sub-gen. of Unio Retzius, 1788)
Type species: Unio cognatus Lea, 1860 (orig. desig.) = Truncilla cognata

Amygdalonajas Ortmann, 1909
Ortmann, 1909. Ann. Carnegie Mus. 5: 192.
Ortmann, 1912. Ann. Carnegie Mus. 8: 327.
Ortmann, 1914. Nautilus 28(6): 67.
(error for Amygdalonaias Fischer & Crosse, 1894)

Taxonomic History (since 1900)

Plagiola (Amygdalonaias)Simpson (1900), Simpson (1914)
Unio (s.s.)Call (1900)
TruncillaSimpson (1900), Simpson (1914), Ortmann & Walker (1922), Ortmann (1924), Ortmann (1925), ... Hauck et al. (2023), Czaja et al. (2023), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026)
Unio (Lampsilis)Martens (1900)
Plagiola (Amygdalonajas) [sic]Ortmann (1909)
PlagiolaOrtmann (1910), Vanatta (1915)
Amygdalonajas [sic]Ortmann (1912), Ortmann (1914)
Uniode Gregorio (1914)
AmygdalonaiasUtterback (1916), Ortmann (1918)
Dysnomia (Penita)Frierson (1927), Haas (1969)

 
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