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Page last updated
Wed 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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Publication Yen (1951): summary
     publication summary

Complete Citation

Yen, T.-C. 1951. Fresh-water mollusks of Cretaceous Age from Montana and Wyoming. U.S. Geol. Surv. Prof. Pap. 233-A: 1-20. Available electronically.

Taxonomic Opinions

Protelliptio douglassi (Stanton)

Sulcatapex cretaceus Yen

Unio farri Stanton = Ligumia farri

Unio natosini McLearn = Quadrula natosini

 
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