 The largest known fossil cowry was "Gisortia gigantiea" Munster, 1828 which reached a length of 350mm.The largest modern cowry is the Atlantic Deer Cowry ("Macrocypraea cervus") at up to 190mm.The largest known cowry from any extant subfamily or genus was the Australian cowry "Zoila (Gigantocypraea) gigas" (McCoy, 1867) at about 247mm.