Order Pectinida Gray 1854 (clam)
Alternative spelling: Pectinoida
Parent taxon: Ostreiformii according to J. G. Carter et al. 2011
Sister taxon: Ostreida
Subtaxa: Anomiidina, Aviculopectinidina, Entoliidina, Leiopectinoidea, Monotoidea, Orientopecten, Paleowaagia, Pectinidina, Streblopterinella
Ecology: stationary epifaunal suspension feeder