Jones, J.W., R.J. Neves, S.A. Ahlstedt & E.M. Hallerman. 2006. A holistic approach to taxonomic evaluation of two closely related endangered freshwater mussel species, the oyster mussel Epioblasma capsaeformis and tan riffleshell Epioblasma florentina walkeri (Bivalvia: Unionidae). Journal of Molluscan Studies 72: 267-283. Available electronically.
(click the figure number to see the cladogram)
+-- Epioblasma_triquetra
+--------+
| +-- Epioblasma_brevidens
--+
| +-------- Epioblasma_capsaeformis__2
+--+
| +----- Epioblasma_capsaeformis__1
+--+
| +-- Epioblasma_walkeri
+--+
+-- Epioblasma_rangiana