Klishko, O.K., M. Lopes-Lima, E. Froufe & A.E. Bogan. 2014. Are Cristaria herculea (Middendorff, 1847) and Cristaria plicata (Leach, 1815) (Bivalvia, Unionidae) separate species? ZooKeys 438: 1-15. Available electronically.
(click the figure number to see the cladogram)
+-- Cristaria_plicata
+--+
| +-- Cristaria_radiata
--+
| +-- Beringiana_beringiana
+--+
+-- Sinanodonta_woodiana