Bivalvia - Protobranchia - Nuculanidae

Synonym: Spirulinae Allen and Sanders 1982

Parent taxon: Nuculanidae according to E.V. Coan et al. 2000

Sister taxa: Acilana, Acutispinula, Australoportlandia, Bathyspinula, Calorhadia, Costelloleda, Dacromya, 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: none

Ecology: facultatively mobile infaunal deposit feeder-suspension feeder