- Batavusiana Bourguignat, 1889 (superseded rank)
- Batavusiana (Crassunio) Modell, 1964 (a junior synonym)
- Cafferia C. T. Simpson, 1900 junior subjective synonym
- Consentunio Jatsko, 1972 (junior subjective synonym)
- Crassiana Servain, 1882 junior subjective synonym
- Crassunio Modell, 1964 (junior objective synonym)
- Eolymnium Prashad, 1919 junior subjective synonym
- Eolymnium (Shadininaia) Starobogatov, 1983 (a junior synonym)
- Limnium (incorrect subsequent spelling of Lymnium)
- Lymnium Moquin-Tandon, 1856
- Margarita (Unio) Philipsson, 1788 (reversed priority of genus-group names)
- Margaron (Unio) Philipsson, 1788 (reversed priority of genus-group names)
- Mysca W. Turton, 1822 junior subjective synonym
- Nemrodia Pallary, 1939 (unavailable; the name published without designating a type species)
- † Ningxiaconcha Q.-H. Ma, 1991 junior subjective synonym
- Nodularia (Cafferia) C. T. Simpson, 1900 superseded combination
- Pictunio Jatsko, 1972 (junior objective synonym of Unio)
- Unio (Bataviana) Servain, 1882 (a junior synonym)
- Unio (Batavusiana) Bourguignat, 1889 (a junior synonym)
- Unio (Cafferia) C. T. Simpson, 1900 superseded combination
- Unio (Consentunio) Jatsko, 1972 (junior subjective synonym)
- Unio (Crassiana) Servain, 1882 junior subjective synonym
- Unio (Crassunio) Modell, 1964 (junior objective synonym)
- Unio (Eolymnium) Prashad, 1919 junior subjective synonym
- Unio (Limnium) [sic] (incorrect subsequent spelling of Lymnium; synonym)
- Unio (Lymnium) Moquin-Tandon, 1856
- Unio (Nemrodia) Pallary, 1939 (original rank)
- Unio (Tumidunio) Jatsko, 1972
- Unio (Tumidusiana) Locard, 1889
- Unio (Unio) Philipsson, 1788
- Unionea Rafinesque, 1815 (unnecessary substitute name or unjustified emendation of Unio)
- Unis F. W. Hutton, 1883 (orthographic variant)
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