Clade Pectinoidae Rafinesque 1815 (clam)
Parent taxon: Pectinoidea according to J. G. Carter et al. 2011
Sister taxa: Entolioididae, Neitheoidae, Deltopectenidae, Terquemiidae, Dreisseniidae, Amusiidae
Subtaxa: Pectinidae, Pleuronectitidae, Spondylidae
Ecology: epifaunal suspension feeder