Using dental enamel to uncover the impact of childhood diet on mortality in Petra, Jordan

•δ13C and δ18O analysis revealed diverse childhood diets at Petra.•Study involved dental enamel from first molars, first premolars, and second molars.•Results show strong reliance on C3 resources with varied C4 contributions.•Children consumed more C4 sources than adults.•Dietary strategies did not impact childhood mortality.