In Tasmania, this order (or taxon of roughly equivalent rank) includes 148 species in 81 genera in 33 families (- subfamilies) in the following superfamilies (or taxa of roughly equivalent rank):
Cardioidea (cockles) (e.g. figure a)
Carditoidea (false-cockles) (e.g. figures b-c)
Chamoidea (jewel-boxes)
Crassatelloidea (thickshell-clams) (e.g. figure d)
Cyamioidea (arc-mussels)
Galeommatoidea (leptons) (e.g. figure e)
Lucinoidea (lucines) (e.g. figure f)
Mactroidea (trough-shells) (e.g. figures g-i)
Solenoidea (razor-shells) (e.g. figure j)
Tellinoidea (tellins) (e.g. figures k-o)
Veneroidea (venus-clams) (e.g. figures p-u)