In Tasmania, this order (or taxon of roughly equivalent rank) includes 32 species in 15 genera in 10 families (- subfamilies) in the following superfamilies (or taxa of roughly equivalent rank):
Clavagelloidea (watering-pots) (e.g. figure a)
Cuspidarioidea (spoon-shells)
Pandoroidea (myadoras) (e.g. figures b-d)
Pholadomyoidea (parilimyas)
Poromyoidea (spoon-shells)
Thracioidea (lantern-shells) (e.g. figures e-g)
Verticordioidea (verticordias)