www.cowries.info

Anchor text: Felix Lorenz and Alex Hubert : ''A Guide to Worldwide Cowries'', second revised edition, Conch Books, 2002

Wikipedia: Cypraeidae

Anchor text: Revision of the mappas

Wikipedia: Leporicypraea mappa

Anchor text: Ocellata

Wikipedia: Naria ocellata

Anchor text: Felix Lorenz and Alex Hubert : ''A Guide to Worldwide Cowries'', second revised edition, Conch Books, 2002

Wikipedia: Staphylaea staphylaea

Anchor text: Felix Lorenz and Alex Hubert : ''A Guide to Worldwide Cowries'', second revised edition

Wikipedia: Mauritia (gastropod)

Anchor text: U.h.portladensis

Wikipedia: Umbilia hesitata