| Page last updatedWed 1 October 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 | ... | Unionoidea | Unionidae | Unioninae | Anodontini | Anodontina | Brachyanodon species Brachyanodon impura (Say, 1829): specimens9 available nominal species synonyms (12 total synonyms)
 Recent Taxonomic OpinionsAnodonta impura — Graf & Cummings (2007), Bogan (2010), Cummings & Graf (2010), IUCN (2011), Graf & Cummings (2021), Czaja et al. (2023), Whelan et al. (2023), Perkins et al. (2025)Anodonta impure [sic] — Galal-Khallaf et al. (2024)
 Brachyanodon impura — Cummings et al. (2025)
 RangeWidely distribute in the central high plateau and Pacific drainages of Mexico. Map of Georeferenced Specimens
 USNM_00.  
 Guatemala
 Mexico|  ZMB_MP_0212
 [no locality available - Central America - Mexico]
 |  UF_34945
 6.5 mi E Jocotepec, Hwy. 44, Jalisco, Mexico
 |  USNM_102219
 Ameca R., Guadlajara, Mexico
 |  |  USNM_162333
 Ameca, W. Mexico
 |  USNM_809461
 Buserias
 |  OSUM_33550
 Canal de Querendero  [about 10-15 mi. N of Morelia] Rio Lerma - Laguna de Cuitzeo Dr.
 |  |  UF_270326
 Central Mexico
 |  ZMB_MP_0131
 Chapala
 |  USNM_149060
 Durango City Market, Mexico
 |  |  USNM_149070
 Durango City Market, Mexico
 |  UF_270325
 Guanajuato, Guanajuato, Mexico
 |  USNM_251832
 L. Chapala, Jalisco, Mexico
 |  |  MNHN_MP_0565
 Lac Chapala (Mexique)
 |  MNHN_MP_1292
 Lac de Chapala
 |  MNHN_MP_1292
 Lac de Chapala
 |  |  MNHN_MP_1301
 Lac de Chapala
 |  MNHN_MP_1302
 Lac de Chapala
 |  USNM_126739
 Laguna de Cuitzeo, Mexico
 |  |  TMYERS_006
 Laguna de Zacapu, Pacific Ocean - Rio Grande de Santiago - Lago de Chapala - Lerma - Angulo, Zacapu,  Michoacán, Mexico
 |  USNM_37257
 Lake Almeja, Mex.
 |  FMNH_11640
 Lake Chapala, at La Palma, state Jalisco, Mexico
 |  |  USNM_102220
 Lake Chapala, Guadlajara, Mexico
 |  USNM_102221
 Lake Chapala, Guadlajara, Mexico
 |  FMNH_126285
 Lake Chapala, Jalisco, Mexico
 |  |  FMNH_126285
 Lake Chapala, Jalisco, Mexico
 |  UF_444988
 Lake Chapala, Jalisco, Mexico
 |  UF_466288
 Lake Chapala, Jalisco, Mexico
 |  |  USNM_801972
 Lake Chapala, Jalisco, Mexico. N shore, W of Chapala
 |  USNM_809193
 Lake Chapala, Ocotlan, Jalisco, Mexico
 |  FMNH_11647
 Lake Lagos, near Jalisco, Rio Verde Syst., Mexico
 |  |  FMNH_11647
 Lake Lagos, near Jalisco, Rio Verde Syst., Mexico
 |  USNM_853956
 Lake of Chapala, Jalisco, Mexico
 |  OSUM_44346
 Lake Pátzcuaro, E end, Rio Balsas Dr.
 |  |  OSUM_44346
 Lake Pátzcuaro, E end, Rio Balsas Dr.
 |  USNM_86730
 Mexico
 |  USNM_86730
 Mexico
 |  |  MNHN-IM-2000-1656
 Mexique, Lac de Chalco
 |  MNHN-IM-2000-1656
 Mexique, Lac de Chalco
 |  MNHN-IM-2000-1657
 Mexique, Lac de Tchapala
 |  |  MNHN-IM-2000-1657
 Mexique, Lac de Tchapala
 |  USNM_117951
 Oaxaca ?, Mexico
 |  USNM_109282
 Ocotlan, Jalisco, Mexico
 |  |  USNM_109282
 Ocotlan, Jalisco, Mexico
 |  USNM_109282
 Ocotlan, Jalisco, Mexico
 |  USNM_251831
 Ocotlan, Jalisco, Mexico
 |  |  MCZ_6808
 Rio Ameca, Jalisco, Mexico
 |  UF_270330
 Rio Ameca, Jalisco, Mexico
 |  ZMB_108856
 Rio Ameca, Prov. Jalisco, Mexico
 |  |  SMF_13488
 Rio Ameca, Staat, Jalisco, Mexiko
 |  FMNH_11577
 Rio Lerma, Ocotlan, Jalisco, Mexico
 |  FMNH_11648
 Rio Lerma, W of Queretaro, Rio Grande de Santiago Syst., Mexico
 |  |  USNM_134837
 Tula, Hidalgo, Mexico
 |  FMNH_11631
 Valles, San Luis Potosi, Mexico
 |  ZMB_MP_0191
 Vera Cruz, Mexico
 |  |  AMNH_139091
 Xochimilco, Mexico
 | 
 USNM_858075. Chapala Lake, Jalisco, Mexico COMA_B.0186. Lago de Chapala, Jalisco, México COMA_B.0391. Lago Zirahuén, Michoacán, México COMA_B.0111. Xochimilco, Distrito Federal, México 
 unknown |