A 35-year-old female skeleton is recovered from an archaeological excavation in rural Maharashtra. The forensic anthropologist notes that the third molars are present but shows significant attrition with exposed dentine on the occlusal surfaces. The roots of the third molars are completely formed and show mild apical resorption. The alveolar bone shows generalized resorption with some tooth loss. Multiple ribs show calcification of costal cartilages. The pubic symphysis shows moderate lipping and irregular margins. Based on these dental and skeletal features, what is the estimated age of this individual?