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France, Bretagne, Ille-et-Vilaine, Dinard, beached, collected 1991, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Cape Verde, São Nicolau, S of Sao Nicolau, CANCAP 6.082, lava sand, van Veen grab, at 35 m depth, collected 14th June 1982, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Tunisia, Medenine, Ile de Jerba, Plage de la Seguia, beached, collected April 1997, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Egypt, Al Bahr al Ahmar, Hurghada, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Egypt, Al Bahr al Ahmar, Hurghada, beached, collected September 1989, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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South Africa, Western Cape, Mossel Bay, littoral zone, collected February 1974, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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United States, Florida, Missouri Key, collected August 1969, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Bahamas, City of Freeport, Freeport Harbour, in sediment sample , by dredging, at 9 m depth, collected 11th May 1985, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Brazil, Santa Catarina, Porto Belo, in sand , at 2 m depth, collected 1984, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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United States, Florida, Sanibel Island, Jarpon Bay, collected June 1969, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Réunion, Cap la Houssaye, sandy bottom , by SCUBA diving, at 12 m depth, collected 1988, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Vietnam, Tonkin, ex coll. G. van Roon. Image by Joop Trausel and Frans Slieker
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Australia, Western Australia, Eagle Bluff, 25 km S of Denham, collected 4th September 1997, ex coll. Stichting Schepsel Schelp. Image by Joop Trausel and Frans Slieker
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Egypt, Janub Sina’, Gulf of Aqaba, Dahab, low tide, collected April 1988, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Australia, Western Australia, Shark Bay, Denham, low tide, collected March 1976, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Kenya, Mombasa, Bambury Beach, low tide, sandy bottom, collected May 1985, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Brazil, Santa Catarina, Porto Belo, low tide, collected April 1984, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Spain, Canarias, Fuerteventura, Oliva Beach. Image by Joop Trausel and Frans Slieker
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Spain, Canarias, Fuerteventura, Oliva Beach, beached, collected December 1997, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker
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Bahamas, City of Freeport, Freeport Harbour, shell sand , by dredging, at 9 m depth, collected 11th May 1985, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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Bahamas, Tamarind Ledge, by dredging, at 30 m depth, collected 8th July 1980, ex coll. W.J.H. Onverwagt. Image by Joop Trausel and Frans Slieker
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