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 | ... | Unionidae | Unioninae | Anodontini | Cristariina | Simpsonella gracilis nominal species Anodonta subcrassa Lea, 1851  Lea, 1851. Proc. Zool. Soc. London 18: 198.
Lea, 1851. Ann. and Mag. 8: 495.
 Lea, 1860. Jour. Acad. Nat. Sci. 4 [O. 7]: 236 [54], pl. 33, fig. 115.
Type(s): HOLOTYPE USNM_86693, Laguna de Bay, Luzon, Phil. Is.
= Simpsonella gracilis Taxonomic Opinions+ Simpsonella gracilis (Lea, 1850) — Haas, 1969 = Simpsonella subcrassa (Lea, 1850) — Simpson, 1914 = Simpsonella subcrassa (Lea, 1850) — Haas, 1914 = Dalliella subcrassa (Lea) — Preston, 1912 = Dalliella subcrassa (Lea, 1850) — Simpson, 1900 = Margaron (Anodonta) subcrassa (Lea) — Lea, 1870 = Anodon subcrassa (Lea, 1850) — Sowerby, 1867 = Anodonta subcrassa Lea — Adams & Adams, 1857 = Anodonta subcrassa Lea — Hanley, 1856 = Margaron (Anodonta) subcrassa (Lea) — Lea, 1852
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