1. Paléontologie animale et humaine; Université de Liège; Liège; B-4000; Belgium
2. Technology Center; Carmeuse Lime and Stone; Pittsburgh; PA15225; USA
3. Carmeuse Coordination Center; Louvain-la-Neuve; B-1348; Belgium
4. Institute of Geology, C.A.G.S.; Beijing; 100037; China