Lopes-Lima, M., M. Hinzmann, A. Teixeira, S. Varandas, J. Machado et al. 2016. The strange case of the tetragenous Anodonta anatina. Journal of Experimental Biology 325A: 52-56. Available electronically.
(click the figure number to see the cladogram)
+----- Pseudanodonta_complanata
--+
| +-- Anodonta_anatina
+--+
+-- Anodonta_cygnea