Reiner Protsch, University of Frankfurt History: Over 30 years he carbon - dated numerous fossils,
including skull fragments from «Hahnhöfersand Man,» a supposed Neanderthal.
Typical «found objects»
include natural materials like sand (see Sand Art), earth, stones, shells, curiously shaped pieces of wood, a human
skull; or man - made items such as newspaper cuttings, photographs, pieces of glass,
fragments of scrap metal, pieces of textile fabric, an unmade bed, a bicycle handlebars, and so on.