temps (durée) (1) pierre (1) Amérique du Sud (1) roche (1) association (1) modèle (1) industrie (1) analyse (1) Les Amériques (1) âge (1) abri (1) Amérique du Sud (1) Brésil (1) Implements (1) Antiquities, Prehistoric (1) Rich people (1) Ground sloths (1) Microscopy (1) Scanning electron microscopy (1) Fossilization (1) Tools (1) Time (1) Stone (1) South America (1) Social interaction (1) Social groups (1) Science (1) Photoluminescence (1) Prehistoric peoples (1) Human beings (1)