Orthoyoldia Verrill 1897 (pointed nut clam)
Bivalvia - Nuculanida - Nuculanidae
PaleoDB taxon number: 16091
Alternative spelling: Yoldia (Orthoyoldia)
Parent taxon: Nuculanidae according to H. E. Vokes 1980
Sister taxa: Acilana, Acutispinula, Australoportlandia, Bathyspinula, Calorhadia, Costelloleda, Dacromya, Eleganuculana, Ezonuculana, Hilgardia, Indonuculana, Ledella, Ledellinae, Litorhadia, Mesosaccella, Multidentata, Nuculana, Nuculaninae, Phestia, Polidevcia, Poroleda, Poroledidae, Praeportlandia, Propeleda, Saccella, Scissuladrana, Spineilo, Veteranella, Veteranellinae, Clidophorus
Subtaxa: Orthoyoldia claibornensis, Orthoyoldia psammotaea, Yoldia (Orthoyoldia) haboroensis, Yoldia (Orthoyoldia) quiba
Ecology: facultatively mobile infaunal deposit feeder-suspension feeder