Page last updated
Thu 09 Jun 2022

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!

This page reports the specimens in the MUSSELpdb and provides a map if geocodes are known. The taxonomic history reports the record of different names and combinations that have been applied to this species (and its synonyms) since 2007.

Search the database pages:

Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Truncilla

species Truncilla cognata (Lea, 1860): specimens
     2 nominal species as synonyms

Taxonomic History (since 2007)

Truncilla cognataGraf & Cummings (2007), Bogan (2010), ITIS (2012), Williams et al. (2017), ..., Inoue et al. (2020), Tiemann et al. (2020), Graf & Cummings (2021), FMCS (2021)
Truncilla cognatusHaag (2012)

Range: Nuevo Leon, Mexico.

Map of Georeferenced Specimens
species map



Rio Salado, N. Leon, Mexico


Rio Salado, N. Leon, Mexico


UTEP_4855 Rio Salado, 8 miles (directly) SE of Anahuac, where roadfrom Anahuac-La Gloria Road to Ejido Nuevo Anaahuac crosses road



Rio Grande, 6 mi W of Del Rio, Val Verde Co., Texas


UTEP_2521 6 miles NW Del Rio, Rio Grande at Val Verde Estates

UTEP_4669 Eagle Pass, 0.15 miles upstream from International Bridge

UF_438569 Rio Grande (site 1), 9.7 mi NNW of Laredo, TX

UF_438552 Rio Grande (site 2), about 300 m upstream of Santa Isabel Creek

USNM_1138102 Rio Grande del Norte, Laredo, Las Palmas Trail, Justo Penn Park, Webb Co., Texas

Page updated: 16:29:09 Thu 09 Jun 2022

NSF icon MUSSEL icon
"Making the world a better place, one mollusk at a time."