Smith, C.H., A.H. Kiser, N.A. Johnson & C.R. Randklev. 2023. Environmental, morphological, and molecular data reveala new species of freshwater mussel, Strophitus howellsi, endemic to the Edwards Plateau in Texas. Conservation Genetics early online. 1-19 pp. Available electronically.
(click the figure number to see the cladogram)
+-- Anodontoides_ferussacianus
+--------+
| +-- Anodontoides_denigratus
|
--+ +-- Strophitus_undulatus
| +-----+
| | +-- Strophitus_howellsi
+--+
| +----- Strophitus_pascagoulaensis
+--+
| +-- Strophitus_radiatus
+--+
+-- Strophitus_williamsi