| In pulmonate land snails, variation in gene organization is found at the level of the superfamily. |
| All members of the superfamily share the same pentameric quaternary structure. |
| The Harpa mollusc shares much in common with volutes and olives. All three families make up the Volutacea superfamily, all of which are active, carnivorous sand burrowers. |
| The superfamily currently comprises 19 families, approximately 89 subfamilies, and about 21,000 described species. |
| This superfamily, called Dene-Caucasian, was probably used throughout Eurasia before either Nostratic, or Eurasiatic, spread. |
| Talin, merlin, and philopodin are other major members of the FERM superfamily. |
