Another family of limpets with mineralised teeth. Distinguished from Nacellidae by presence of true left gill. An easily recognised limpet with 5 or 6 strong radial ribs.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith