Abstract
Dental enamel thickness is commonly listed among the diagnostic features for taxonomic assessment and phylogenetic reconstruction in the study of fossil homi nids, and is widely used as an indicator of dietary habits and palaeoenvironmental conditions. However, little quantitative information is currently available on its topographic variation in deciduous crowns of fossil primates. By means of high-resolution microtomography, we investigated the inner structural morphology of the mixed lower dentition of Ouranopithecus macedoniensis, a late Miocene large-bodied ape from Macedonia, Greece. With respect to the extant African apes and Homo, O. macedoniensis shows a signifi cant diff erence in occlusal enamel thickness between the relatively thin deciduous second molar and the absolutely thick-enamelled permanent fi rst molar.
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