This finding consolidates the recent dating of African-like industries of India to c. 96,000 years ago, as well as other previous discoveries from mostly China, and, jointly, they totally out-date not just the ridiculous "60 Ka ago" mantra for the migration out-of-Africa (which we know is dated to c. 125,000 years ago in Arabia and Palestine) but also the previous estimates of c. 80,000 years ago for India (Petraglia 2007).
Guanjung Shen et al., Mass spectrometric U-series dating of Huanglong Cave in Hubei Province, central China: Evidence for early presence of modern humans in eastern Asia. Journal of Human Evolution, 2013. Freely accessible at the time of writing this → LINK [doi:10.1016/j.jhevol.2013.05.002]
Most researchers believe that anatomically modern humans (AMH) first appeared in Africa 160-190 ka ago, and would not have reached eastern Asia until ∼50 ka ago. However, the credibility of these scenarios might have been compromised by a largely inaccurate and compressed chronological framework previously established for hominin fossils found in China. Recently there has been a growing body of evidence indicating the possible presence of AMH in eastern Asia ca. 100 ka ago or even earlier. Here we report high-precision mass spectrometric U-series dating of intercalated flowstone samples from Huanglong Cave, a recently discovered Late Pleistocene hominin site in northern Hubei Province, central China. Systematic excavations there have led to the in situ discovery of seven hominin teeth and dozens of stone and bone artifacts. The U-series dates on localized thin flowstone formations bracket the hominin specimens between 81 and 101 ka, currently the most narrow time span for all AMH beyond 45 ka in China, if the assignment of the hominin teeth to modern Homo sapiens holds. Alternatively this study provides further evidence for the early presence of an AMH morphology in China, through either independent evolution of local archaic populations or their assimilation with incoming AMH. Along with recent dating results for hominin samples from Homo erectus to AMH, a new extended and continuous timeline for Chinese hominin fossils is taking shape, which warrants a reconstruction of human evolution, especially the origins of modern humans in eastern Asia.
The range of dates for the teeth is ample but the oldest one is of 102.1 ± 0.9 Ka ago. Other dates are very close to this one: 99.5 ± 2.2, 99.3 ± 1.6, 96.8 ± 1.0, etc. (see table 1), so there can be little doubt about their accuracy.
|The Huanglong teeth (various views)|
Now, how solidly can these teeth be considered to belong to the species Homo sapiens? Very solidly it seems:
The seven hominin teeth from Huanglong Cave have been assigned to AMH mainly because of their generally more advanced morphology than that of H. erectus and other archaic populations (Liu et al., 2010b), especially in terms of the crown breath/length index. These teeth also lack major archaic suprastructural characteristics listed by Bermúdez de Castro (1988) for eastern Asian mid-Pleistocene hominins, such as “strong tuberculum linguale (incisors), marked lingual inclination of the buccal face (incisors and canines), buccal cingulum (canines and molars), wrinkling (molars), taurodontism (molars), swelling of the buccal faces (molars)” (Tim Compton, Personal communication). However, in their roots, these teeth still retain a few archaic features, being more robust and complicated than those of modern humans (Liu et al., 2010b).
Let's not forget that further South in China, in Zhirendong, a "modern" jaw was found and dated to c. 100,000 years ago as well.
As for the so-called "molecular clock":
The new timeline for human evolution in China is in disagreement with the molecular clock that posits a late appearance for AMH in eastern Asia (e.g., Chu et al., 1998).
... too bad for the "clock", because a clock that doesn't inform us of time with at least some accuracy is totally useless.