Before revision: It was long considered to be the oldest accurately dated artifact in North Rhine-Westphalia and can be found in the Ruhr Museu :de:Ruhr Museum.Jürgen Richter: Bewusste geometrische Gestaltung bei Homo heidelbergensis?
After revision: It was long considered to be the oldest accurately dated artifact in North Rhine-Westphalia and can be found in the :de:Ruhr Museum.Jürgen Richter: Bewusste geometrische Gestaltung bei Homo heidelbergensis?