†Psilounio (Dagaurostoma) Guo 1985 (freshwater mussel)
Bivalvia - Unionida - Unionidae
Parent taxon: Psilounio according to Guo 1985
Sister taxa: Psilounio (Phortunio), Psilounio (Psilounio), Psilounio sinensis
Subtaxa: Psilounio (Dagaurostoma) suni
Type: Unio suni
Ecology: facultatively mobile infaunal suspension feeder
Distribution: found only at Huluhe, Fuxian (Jurassic of China)