title: Prehistoric dental calculus gives evidence for coca in early coastal Ecuador.
mesh_terms: D003041:Coca; D003728:Dental Calculus / Q000032:analysis / Q000266:history*; D004484:Ecuador; D005247:Feeding Behavior; D005260:Female; D049690:History, Ancient; D006801:Humans; D008297:Male; D010161:Paleodontology; D010946:Plants, Medicinal