Graf, D.L. 2000. The Etherioidea revisited: a phylogenetic analysis of hyriid relationships (Mollusca: Bivalvia: Paleoheterodonta: Unionoida). Occasional Papers of the Museum of Zoology, University of Michigan (729): 1-21. Available electronically.
(click the figure number to see the cladogram)
+-------------------------- Neotrigonia_margaritacea
|
| +----------------------- Margaritifera
--+ |
| | +-------- Unio
| | +-----------+
+--+ | | +----- Elliptio
| | +--+
| | | +-- Pyganodon
| | +--+
+--+ +-- Lampsilis
|
| +----------------- Parreysia
| |
| | +-------------- Grandidieria
+--+ |
| | +-------- Castalia
| | +--+
+--+ | | +----- Diplodon
| | +--+
| | | +-- Hyridella
| | +--+
+--+ +-- Velesunio
|
| +-- Mutela__1
| +-----+
| | +-- Mutela__2
+--+
| +----- Anodontites
| |
+--+----- Mycetopoda
|
| +-- Etheria
+--+
+-- Mulleria