†superfamily Praecardioidea Hoernes 1884 (clam)
Synonym: Praecardiacea Hoernes 1884 [replaced name]
Parent taxon: Praecardioidei according to J. G. Carter et al. 2011
See also Bouchet et al. 2010, Jagt-Yazykova et al. 2006, Kříž 2007, Nevesskaja 2009, Newell 1965, Ride et al. 1999 and Vokes 1980
Sister taxa: Cardioloidea, Praecardiida
Subtaxa: Buchiolidae Palaeocardiidae Praecardiidae
Ecology: facultatively mobile epifaunal suspension feeder