Proceedings of the XV UISPP World Congress (Lisbon, 4-9 September 2006), Vol. 35. Contents: Introduction (Marc Groenen & Didier Martens); 1) Application de la methodologie de lHistoire de lart a letude de lart paleolithique: lattribution des oeuvres anonymes a ses auteurs (Juan-Maria Apellaniz); 2) Les peintures de la grotte de la Pasiega A (Puente Viesgo, Cantabrie) a lepreuve de la methode de lattribution (Marc Groenen, Didier Martens); 3) The recognition of diversity through style in the Saharan rock-art research: an historiographic approach from the Western Sahara (Joaquim Soler Subils); 4) The rock art of South-Morocco revisited: On surprising stylistic and thematic characteristics of the so-called Pseudo-Bovidien and Tazinien rock art from the mid valley of Wadi Draa (Renate Heckendorf); 5) Spirals in Humahuaca and in the NW of Argentina (South America) Alicia Ana (Fernandez Distel, Jose Luis Mamani); 6) Spirals at Sturts Meadows (John Clegg); 7) Circular elements in the rock art of the State of Bahia, Brazil (Guilherme Albagli de Almeida); 8) Spirals of the prehistoric Open Rock painting from Kosova (Edi Shukriu); 9) To be or not to be Palaeolithic, that is the question (Robert G. Bednarik); 10) The Margot Cave (Mayenne): a new palaeolithic sanctuary in West France (Romain Pigeaud et al.) 11) Fluted Animals in the Zone of Crevices, Gargas Cave, France (Kevin Sharpe, Leslie Van Gelder); 12) Schematic panel with paleolithic punctuation and other questions of Paleoastronomy and Philosophy of Antiquity (Jose Fernandez Quintano); 13) Epipaleolithic and Mesolithic Burials from 12.000 to 7.000 BP in Llevantin Territory Art Rock (Carme Olaria, Francesc Gusi, Jose Luis Lopez); 14) Gravuras serpentiformes na regiao de Tras-os-Montes (Maria Fernanda Ferrato Melo de Carvalho); 15) The Camera Obscura and the Origin of Art: The Case for Image Projection in the Paleolithic (Matt Gatton, Leah Carreon, Madison Cawein, Walter Brock, and Valerie Scott); 16) Etude et presentation de lart rupestre en Iran (exemple detude dans les regions du province central et Kerman dIran) (Elyas Saffaran; 17) Archeological Use of Caves on the Northwestern Plains, USA (John Greer and Mavis Greer); 18) Mogollon rock art and the status of the flute player (Maarten van Hoek); 19) The findings of the presence of the sabre toothed tiger (Beltrao, M. C. M. C. and Locks, M.).