@article {319405,
	title = {Rare dental trait provides morphological evidence of archaic introgression in Asian fossil record},
	journal = {Proceedings of the National Academy of Sciences},
	year = {2019},
	month = {2019/07/03},
	pages = {201907557},
	abstract = {<p>The recently described Denisovan hemimandible from Xiahe, China [F. Chen et al., (2019) Nature 569, 409{\textendash}412], possesses an unusual dental feature: a 3-rooted lower second molar. A survey of the clinical and bioarchaeological literature demonstrates that the 3-rooted lower molar is rare (less than 3.5\% occurrence) in non-Asian Homo sapiens. In contrast, its presence in Asian-derived populations can exceed 40\% in China and the New World. It has long been thought that the prevalence of 3-rooted lower molars in Asia is a relatively late acquisition occurring well after the origin and dispersal of H. sapiens. However, the presence of a 3-rooted lower second molar in this 160,000-y-old fossil hominin suggests greater antiquity for the trait. Importantly, it also provides morphological evidence of a strong link between archaic and recent Asian H. sapiens populations. This link provides compelling evidence that modern Asian lineages acquired the 3-rooted lower molar via introgression from Denisovans.</p>
},
	doi = {https://doi.org/10.1073/pnas.1907557116},
	url = {https://www.pnas.org/content/early/2019/07/02/1907557116},
	author = {Bailey, Shara E. and Hublin, Jean-Jacques and Ant{\'o}n, Susan C.}
}
