Prie, V., N. Puillandre & P. Bouchet. 2012. Bad taxonomy can kill: molecular reevaluation of Unio mancus Lamarck, 1819 (Bivalvia: Unionidae) and its accepted subspecies. Knowledge and Management of Aquatic Ecosystems 405: 08. Available electronically.
(click the figure number to see the cladogram)
+-------------- Pseudunio_auricularius
--+
| +----------- Unio_tumidus
+--+
| +-------- Unio_crassus
+--+
| +----- Unio_pictorum
+--+
| +-- Unio_mancus
+--+
+-- Unio_elongatulus