Smith, C.H. & N.A. Johnson. 2020. A Comparative Phylogeographic Approach to Facilitate Recovery of an Imperiled Freshwater Mussel (Bivalvia: Unionida: Potamilus inflatus). Diversity 12(7), 281: 1-21. Available electronically.
(click the figure number to see the cladogram)
+----- Potamilus_inflatus
--+
| +-- Potamilus_purpuratus
+--+
+-- Potamilus_fragilis