A December 3, 2024 (open access) monograph published by the Cambridge University Press comprehensively reviews the historical population genetics of East Asia and its vicinity, with associated linguistic and cultural implications. It is one volume in a larger series about Ancient East Asia.
I'll discuss and analyze this wide ranging 90 page review article as time allows in the future.
Hat tip to Language Log.
does this cover neanderthal and denisovans dna in humans
ReplyDeleteEarliest modern human genomes constrain timing of Neanderthal admixture
ReplyDeletehttps://www.nature.com/articles/s41586-024-08420-x
"does this cover neanderthal and denisovans dna in humans" This is discussed in the review article. "Earliest modern human genomes constrain timing of Neanderthal admixture" I saw this.
ReplyDeleteHigh-precision U-series dating of Panxian Dadong hominin site, Guizhou Province, southwestern China
ReplyDeleteAuthor links open overlay panelXiaochao Che a, Fei Han b
, Xingsheng Zhang c, Bo Cao d, Ping Xiao e, Guanjun Shen f, Jianxin Zhao g
Abstract
Panxian Dadong, an important hominin cave site in Guizhou Province, southwestern China, has yielded significant discoveries, including four hominin teeth, thousands of stone artifacts and abundant mammalian fossils. Previous dating efforts, such as preliminary U-series dating of speleothem samples with alpha spectrometry, subsequent coupled ESR/U-Th dating of fossil teeth, and OSL dating of sediments yielded broadly consistent age results. These studies have widely placed the site within late Middle Pleistocene. In this study, we present updated systematic U-Th dating results obtained using high-precision multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS). The new data reveal that speleothem samples from bottom to top in Areas A and C yielded age ranges of 389 to 96 ka and 418 to 33 ka, respectively. In particular, Layer I in Area C was dated to 100-33 ka, indicating that human occupation of the site extended into the Late Pleistocene. A Bayesian analysis refined the age constraints for the hominin fossil-containing Layers VII-II in Area C to approximately ∼320-113 ka, suggesting an earlier dispersal to the region, potentially representing Denisovans or the recently proposed Homo juluensis. Additionally, the artifact-bearing deposits between the fourth and third flowstone layers in Area A, were dated to 389-285 ka, establishing Panxian Dadong as one of the earliest hominin settlement sites in southwestern China during the Middle Pleistocene.
Introduction
The Yunnan-Guizhou Plateau holds significant importance for understanding human evolution in East Asia (Zhu et al., 2008; Zhou et al., 2023). Its numerous karstic caves, scattered across the region, offered ideal habitats for early human settlement. Among these hominin cave sites is Panxian Dadong, the focus of this study, located in Panzhou City (formerly known as Panxian County) in western Guizhou Province, southwestern China (Fig. 1).
Panxian Dadong (PXDD; 25.6232°N, 104.7520°E; 1724m a.s.l.) is the middle cave of a large karst system comprising three stacked caverns interconnected within a 230-m-high hill(Xiong and Liu, 1997). The east-facing entrance of PXDD measures ∼55 m in width, ∼50 m in height, and is situated ∼32 m above the valley floor. The surrounding region is predominantly composed of Carboniferous and Permian limestones. Originally formed as a sinkhole by subterranean rivers, PXDD's passages were later desiccated due to neotectonic uplift. The frontal section of the cave is partially obstructed by a huge stalagmitic column. Outside the cave, a small Buddhist temple once stood, now in ruins. The present-day access to the inner cave, where excavations were conducted, is located along the northern wall (Fig. 1).