Bivalvia - Protobranchia - Nuculanidae
Alternative spelling: Dacryomya
Parent taxon: Nuculanidae according to H. E. Vokes 1980
Sister taxa: Acilana, Acutispinula, Australoportlandia, Bathyspinula, Bathyspinulinae, Calorhadia, Costelloleda, Ezonuculana, Glyptoleda, Hilgardia, Indonuculana, Ledella, Ledellinae, Ledoides, Lembulus, Litorhadia, Mesosaccella, Multidentata, Nuculaninae, Nucundata, Orthoyoldia, Parayoldiella, Phestia, Phestiinae, Polidevcia, Poroleda, Poroledidae, Praeportlandia, Propeleda, Saccella, Scissuladrana, Spineilo, Xiaoschuiculana, Zealeda
Subtaxa: Dacryomya elongata, Dacryomya kiparisovae, Dacryomya peculiaris, Dacryomya polaris, Dacryomya skorochodi, Dacryomya tarua
Ecology: facultatively mobile infaunal deposit feeder-suspension feeder