Costelloleda Hertlein and Strong 1940 (pointed nut clam)
Bivalvia - Protobranchia - Nuculanidae
Alternative spelling: Nuculana (Costelloleda)
Parent taxon: Nuculanidae according to J. A. Todd 2001
Sister taxa: Acilana, Acutispinula, Australoportlandia, Bathyspinula, Bathyspinulinae, Calorhadia, 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: Nuculana (Costelloleda) whitensis
Ecology: facultatively mobile infaunal deposit feeder