In Tasmania, this order (or taxon of roughly equivalent rank) includes 147 species in 68 genera in 28 families (- subfamilies) in the following superfamilies (or taxa of roughly equivalent rank):
Phasianelloidea (pheasant-shells) (e.g. figure a)
Haliotoidea (abalones) (e.g. figure b)
Fissurelloidea (keyhole-limpets) (e.g. figures c-e)
Lepetelloidea (cap-limpets)
Scissurelloidea (slit-shells) (e.g. figure f)
Seguenzioidea (top-shells) (e.g. figures g-h)
Trochoidea (top-shells) (e.g figures i-p)
Turbinoidea (turbans) (e.g. figures q-r)
Vetigastropoda unplaced (ataphrids) (figure s)