†Nuculoidea Williams and Berger 1916 (nut clam)
Bivalvia - Nuculida - Nuculidae
Parent taxon: Nuculidae according to H. E. Vokes 1980
Sister taxa: Acila, Austronucula, Brevinucula, Condylonucula, Deshayesii, Economolopsis, Ennucula, Lacia, Microgloma, Nucula, Nuculanella, Nuculavus, Nuculinae, Nuculoma, Nuculominae, Nuculopsis, Palaeonucula, Palaeonuculinae, Pectinucula, Pronucula, Rumptunucula, Similiconcha, Trigonucula
Subtaxa: Nuculoidea corbuliformis, Nuculoidea opima
Ecology: facultatively mobile infaunal deposit feeder-suspension feeder