Contenido: I The problem and the model : 1. The research problem 2. Ecosystem models and information flow in the Teguacán-Oaxaca region. II The cultural and environmental setting : 3. Guilá Naquitz in spatial, temporal and cultural context. 4. The physical environment of the Guilá Naquitz. III Excavation and artifact analysis. 5. The excavation of Guilá Naquitz. 6. Chipped-stone tools. 7. Sources of the Guilá Naquitz chipped-stone. 8. Ground-stone artifacts. 9. Preceramic Cordage and basketry from Guilá Naquitz. 10. Artifacts of wood and related materials. 11. Woods used as fuels. 12. Artifacts of deer antler. 13. Coprolites and animal fur. 14. Radiocarbon dates. IV Comparing the archaic and modern environments. 15. Pollen analysis of the Oaxaca archaic. 16. Comparing the preceramic and modern microfauna. V Analysis of subsistence. 17. The quantification of subsistence data: an introduction to part V. 18. wild food resources of the mitla caves: productivity, seasonality and annual variation. 19. Preceramic plant remains from Guilá Naquitz. 20. Cucurbits from preceramic levels at Guilá Naquitz. 21. Preceramic phaseolus from Guilá Naquitz. 22. Animal food from preceramic Guilá Naquitz. 23.Nutritional significance of the Guilá Naquitz food remains. 24. Food procurement area and preceramic diet at Guilá Naquitz. VI Spatial analysis of living floors. 25. Spatial analysis of Guilá Naquitz living floors : an introduction to part VI 26. Spatial variation of debris at Guilá Naquitz: a descriptive approach. 27. A spatial analysis of four occupation floors at Guilá Naquitz 28. Multidimensional scaling of four Guilá Naquitz living floors 29. Episodal analysis of Guilá Naquitz: a synthesis of Spencer´s, Whallon´s, and Reynold´s results. VII Simulating foraging and early agriculture in Oaxaca. 30. The modeling of foraging strategy: an introduction to part VII 31. An adaptative computer model for the evolution of plant collecting and early agriculture in the eastern valley of Oaxaca 32. Adaptation, evolution, and archaeological phases: some implications of Reynold´s simulation VIII Summary and conclutions 33. a visit to the master 34. Resumen en español