These smooth-shelled, suspension-feeding, shallow-burrowing bivalves are recognised by the triangular pit (resilifer) in the hinge where the internal ligament is located.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
