Combosch, D.J., T.M. Collins, E.A. Glover, D.L. Graf, E.M. Harper et al. 2017. A family-level tree of life for bivalves based on a Sanger-sequencing approach. Molecular Phylogenetics and Evolution 107: 191-208. Available electronically.
(click the figure number to see the cladogram)
+-- Neotrigonia_margaritacea
+--------------------+
| +-- Neotrigonia_lamarckii
|
| +----- Triplodon_corrugatus
--+ +--------------+
| | | +-- Velesunio_ambiguus
| | +--+
| | +-- Hyridella_australis
+--+
| +----- Unio_pictorum
| +-----------+
| | | +-- Lampsilis_cardium
| | +--+
+--+ +-- Scabies_crispata
|
| +-------------- Margaritifera_margaritifera
| |
+--+ +-- Chambardia_wahlbergi
| +--------+
| | +-- Aspatharia_pfeifferiana
+--+
| +-------- Etheria_elliptica
+--+
| +----- Mutela_hargeri
+--+
| +-- Tamsiella_schroeteriana
+--+
+-- Lamproscapha_ensiformis
+-- Neotrigonia_margaritacea
+--------------+
| +-- Neotrigonia_lamarckii
|
| +-- Chambardia_wahlbergi
| +--------+
| | +-- Aspatharia_pfeifferiana
--+ +--+
| | | +-------- Etheria_elliptica
| | +--+
| | | +----- Mutela_hargeri
| | +--+
| | | +-- Tamsiella_schroeteriana
+--+ +--+
| +-- Lamproscapha_ensiformis
|
| +----- Velesunio_ambiguus
| +-----+
| | | +-- Triplodon_corrugatus
| | +--+
+--+ +-- Hyridella_australis
|
| +-------- Margaritifera_margaritifera
+--+
| +----- Unio_pictorum
+--+
| +-- Scabies_crispata
+--+
+-- Lampsilis_cardium