major division of geologic time and deposits in The Netherlands. The Reuveran Stage, named for a clay deposit of the same name, is Pliocene in age (between 1,600,000 and 5,300,000 years old). The Reuveran underlies undoubted Pleistocene deposits and has been correlated with the Coralline Crag of Great Britain and the Kaolin Sands of northern European regions.