†Unio (Palaeunio) Ma 1999 (freshwater mussel)
Bivalvia - Unionida - Unionidae
Parent taxon: Unio according to Ma 1999
Sister taxa: Unio aucklandicus, Unio belliplicatus, Unio carteri, Unio dacombii, Unio daintreei, Unio deserticus, Unio franconica, Unio galloprovincialis, Unio hamili, Unio hubbardii, Unio hunteri, Unio imbricatus, Unio johnstoni, Unio kirchbergensis, Unio littoralis, Unio mamillatus, Unio natosini, Unio patapscoensis, Unio penultimus, Unio peregrinus, Unio pictorum, Unio rackianus, Unio regularis, Unio scrobicularioides, Unio sparsa, Unio stricklandii, Unio tumidus, Unio vetustus
Subtaxa: Unio (Palaeunio) sichuanensis
Type: Unio (Palaeunio) sichuanensis
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Dakang, Zhongba (Jurassic of China)