†Polidevcia lunulata Dembskaya 1972 (pointed nut clam)
Bivalvia - Protobranchia - Nuculanidae
Alternative combinations: Leda lunulata, Nuculana lunulata
Belongs to Polidevcia according to M. E. Clapham 2011
Sister taxa: Polidevcia abrupta, Polidevcia aequilata, Polidevcia antequadrata, Polidevcia arctura, Polidevcia bellistriata, Polidevcia bicarinata, Polidevcia browni, Polidevcia cryptica, Polidevcia flexuosa, Polidevcia jamesi, Polidevcia kasanensis, Polidevcia kolyvanica, Polidevcia lyonsensis, Polidevcia magna, Polidevcia nodulosa, Polidevcia obesa, Polidevcia ovata, Polidevcia stevensiana, Polidevcia thomasi, Polidevcia tulcumbensis, Polidevcia undosa, Polidevcia vorgaschorica, Polidevcia zabaikalica
Ecology: facultatively mobile infaunal deposit feeder-suspension feeder