Froufe, E., D.V. Gonçalves, A. Teixeira, R. Sousa, S. Varandas et al. 2016. Who lives where? Molecular and morphometric analyses clarify which Unio species (Unionida, Mollusca) inhabit the southwestern Palearctic. Organisms Diversity & Evolution 16(3): 597-611. Available electronically.
(click the figure number to see the cladogram)
+-- Nodularia_douglasiae
+--------------------------+
| +-- Nodularia_breviconcha
|
--+ +-- Unio_gibbus
| +-----------------------+
| | +-- Unio_durieui
+--+
| +----------------------- Unio_tumidus
| |
+--+ +-- Unio
| +-----------------+
| | +-- Unio_tumidiformis
+--+
| +----------------- Unio_delphinus
+--+
| +-------------- Unio_foucauldianus
+--+
| +----------- Unio_ravoisieri
+--+
| +-------- Unio_mancus
+--+
| +----- Unio_elongatulus
+--+
| +-- Unio_pictorum
+--+
+-- Unio_caffer