Graf, D.L. & D. Ó Foighil. 2000. Molecular phylogenetic analysis of 28S rDNA supports a Gondwanan origin for Australasian Hyriidae (Mollusca: Bivalvia: Unionoida). Vie et Milieu 50(4): 245-254. https://www.researchgate.net/profile/Daniel_Graf4/publication/281827823_Molecular_phylogenetic_analysis_of_28S_rDNA_supports_a_Gondwanan_origin_fir_Australasian_Hyriidae_Mollusca_Bivalvia_Unionoida/links/55f9d81808aeba1d9f2241d1.pdf.
(click the figure number to see the cladogram)
+----------------- Cumberlandia_monodonta
|
| +-- Unio_pictorum
| +--+
| | +-- Pyganodon_grandis
+-----------+
--+ | +-- Amblema_plicata
| +--+
| +-- Lampsilis_cardium
|
| +-------------- Velesunio_ambiguus
| |
+--+ +-- Diplodon_chilensis
| +--------+
| | +-- Castalia
+--+
| +-------- Hyridella_australis__2
+--+
| +----- Hyridella_australis__1
+--+
| +-- Echyridella_menziesii
+--+
+-- Hyridella_depressa