Age estimation in fossil hominins: comparing dental development in early Homo with modern humans

AbstractBackground: Previous studies have used molar tooth eruption as a comparative marker of maturation in early fossil hominins. However, tooth eruption and tooth formation are independent maturational processes.Aim: To determine whether estimates of age for entering a stage of dental development in three early hominin fossils fell within the distribution of a modern human sample.Methods: This study used a comparative model of dental development to identify the stages of dental development most likely to provide information about length of the growth period in early fossil hominins. Age estimates for stages of dental development in fossils were superimposed onto a normal distribution of the same radiographically defined stages derived from a sample of 6540 children of diverse geographical origin.Results: Both within the dentition of S7–37, from Sangiran, Java, but also for stages of two other specimens (KNM-WT 15000 from Kenya and StW 151 from South Africa), all age estimates for later stages of tooth ...