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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 Branson (1935): summary
     publication summary

Complete Citation

Branson, C.C. 1935. Fresh-water invertebrates from the Morrison (Jurassic?) of Wyoming. Journal of Paleontology 9(6): 514-522.

Attributed Nominal Genera

Vetulonaia Branson, 1935
Branson, 1935. Jour. Paleont. 9(6): 517.
Type species: Vetulonaia whitei Branson, 1935 (orig. desig.) = Vetulonaia whitei

Attributed Nominal Species

Vetulonaia mayoworthensis Branson, 1935
Branson, 1935. Jour. Paleont. 9(6): 517, pl. 56, figs. 7, 11, 14, 16-18.

Vetulonaia whitei Branson, 1935
Branson, 1935. Jour. Paleont. 9(6): 517, pl. 56, figs. 1-5, 8-10, 12-13, 15, 19.

Taxonomic Opinions

Unio baileyi Logan

Unio felchii White = Elliptio felchii

Unio iridoides White

Unio knighti Logan = Unio knightii

Unio lapilloides White

Unio macropisthus White

Unio stewardi White = Pleurobema stewardi

Unio toxonotus White = Lampsilis toxonotus

Unio willistoni Logan

Vetulonaia mayoworthensis C.C. Branson, n. sp.

Vetulonaia nucalis (Meek and Hayden) = Unio nucalis

Vetulonaia whitei C.C. Branson, n. sp.
 
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