Original description, by Linnaeus (1758, p. 685): "V. testa subcordata: fulcis transversis recurvis acutis, margine postico crenulato pone anum canaliculato. Habitat in O. Europaeo, frequenter etiam fossilis."
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith