Infraclass Heteroconchia Gray 1854 (clam)
Parent taxon: Autobranchia according to R. Bieler et al. 2014
See also Bieler and Mikkelsen 2006, Bouchet et al. 2010, Carter et al. 2011, Giribet and Wheeler 2002, Scholz et al. 2008 and Ward 1992
Sister taxa: Cercomyidae, Pteriomorphia
Subtaxa: Archiheterodonta Eoastartella Euheterodonta Heterodonta Heterodonta Lipanellidae Palaeoheterodonta Parenia
Ecology: facultatively mobile infaunal suspension feeder