Metzger, M.J., A.N. Paynter, M.E. Siddall & S.P. Goff. 2018. Horizontal transfer of retrotransposons between bivalves and other aquatic species of multiple phyla. Proceedings of National Academy of Sciences 115(18): E4227-E4235. Available electronically.
(click the figure number to see the cladogram)
+----- Lasmigona_costata
--+
| +-- Elliptio_complanata
+--+
+-- Lampsilis_siliquoidea