Alternative spelling: Nuculoida
Parent taxon: Nuculiformii according to J. G. Carter et al. 2011
Sister taxa: Nuculiformes, Solemyida
Subtaxa: Antactinodion, Bicrenucula, Bicrenula, Borissia, Caesariella, Clinopista, Cnestriella, Costaledopsis, Costatoleda, Ctenodontoidea, Dysondonta, Ekaterodonta, Eleganuculana, Eritropsis, Iheringinucula, Indoculana, Kasachia, Kufralaria, Leiodysodonta, Lepteviella, Menneroctenia, Neiloides, Notonucula, Nuculoidea, Paleostraba, Paulinea, Pensarnia, Phaseoloidea, Phestioides, Praesacella, Pristiglomoidea, Pseudoleda, Pseudonuculana, Ptychostolis, Qiongzhounia, Rollieria, Sareptoidea, Scyphoconcha, Sibiroctenia, Similoconcha, Suria, Tropinuculites, Veteranella, Xiaoshuisulcna, Zechania
Ecology: slow-moving infaunal deposit feeder