Zhiren Cave

Zhiren Cave
Shown within China
Location Guangxi, China
Coordinates 22°17′13.6″N 107°30′45.1″E / 22.287111°N 107.512528°E / 22.287111; 107.512528Coordinates: 22°17′13.6″N 107°30′45.1″E / 22.287111°N 107.512528°E / 22.287111; 107.512528
History
Periods early Late Pleistocene

Zhiren Cave is a karstic cave in the Mulan Mountains that overlooks the Hejiang River in Chongzuo, Guangxi, China.[1] Zhiren Cave is an early Late Pleistocene site that has yielded the fossil remains of possibly anatomically modern humans with some mixed archaic human features.[1][2]

Fossils

The fossil remains were discovered by Chinese paleontologists in 2007.[1] The fossils were covered by a continuous layer of flowstone, a layer that was initially dated to around 113,000 to 100,000 BP.[1] A more thorough re-dating was later undertaken, and gives an estimate date of around 116,000 to 106,000 BP.[3]

Some of the large mammal remains discovered at Zhiren Cave include those from Pongo pygmaeus, Elephas kiangnanensis, Elephas maximus, Megatapirus augustus, Rhinoceros sinensis, Megalovis guangxiensis, Cervus unicolor, Ursus thibetanus, Arctonyx collaris and Panthera pardus.[1] Around 25% of the large mammal species discovered at the site are now currently extinct.[4]

Three pieces of hominin remains were identified: two upper molars (Zhiren 1 and Zhiren 2) and an anterior mandible (Zhiren 3).[1] The fossils are believed to have belonged to at least two different individuals, as Zhiren 1 and Zhiren 3 are unlikely to have come from the same individual.[1]

When compared to Late Pleistocene fossils from western Eurasia, Zhiren 1 and Zhiren 2 are smaller and would be classified as modern; however, the comparative context is lacking in East Asian Late Pleistocene fossils.[4]

Zhiren 3 contains a mix of archaic and modern human features.[1] The most significant aspect of Zhiren 3 is that it has a distinctively modern human chin.[1][2] Coupled with the dating, Erik Trinkaus views the remains as evidence for "the oldest modern human outside of Africa."[2] However, many others are skeptical of this conclusion, since this would significantly push back the general consensus on the dating of human migration out of Africa.[4]

See also

References

  1. 1 2 3 4 5 6 7 8 9 Wu Liu; Chang-Zhu Jin; Ying-Qi Zhang; Yan-Jun Cai; Song Xing; Xiu-Jie Wu; Hai Cheng; R. Lawrence Edwardse; Wen-Shi Pan; Da-Gong Qin; Zhi-Sheng An; Erik Trinkaus & Xin-Zhi Wu (Oct 25, 2010). "Human remains from Zhirendong, South China, and modern human emergence in East Asia". PNAS. 107 (45). doi:10.1073/pnas.1014386107.
  2. 1 2 3 Kaufman, Rachel (October 25, 2010). "Oldest Modern Human Outside of Africa Found". National Geographic. Retrieved 24 May 2016.
  3. ↑ Cai, Yanjun (March 2016). "The age of human remains and associated fauna from Zhiren Cave in Guangxi, southern China". Quaternary International. doi:10.1016/j.quaint.2015.12.088.
  4. 1 2 3 Dennell, Robin (November 2010). "Palaeoanthropology: Early Homo sapiens in China". Nature. doi:10.1038/468512a.


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