Silesunionina was named by Skawina and Dzik (2011) [The defined suborder is apparently paraphyletic: it occupies a transitional position between the ancestral Trigoniida and more advanced members of the Unionida. Families included: Trigonodidae Modell, 1942 (= Pachycardiidae Cox, 1961), possibly Anthracosiidae Amalitzky, 1898, probably Unionellidae fam. nov., and Silesiunionidae fam. nov.]. It is not extant.

It was assigned to Unionida by Skawina and Dzik (2011).