| upper age limit boundary |
| approx. average age |
| lower age limit boundary |
rate entry
| 0.5 |
| 1.7 |
Zhu R. X. Potts R. Pan Y. X. Lue L. Q. Yao H. T. Deng C. L. et al. (2008). Paleomagnetism of the Yuanmou Basin near the southeastern margin of the Tibetan Plateau and its constraints on late Neogene sedimentation and tectonic rotation. Earth and Planetary Science Letters 272(1-2) 97-104.
Homo erectus
Shangnabang
The argument for an very early Pleistocene age (1.7 Ma) is based on correlating their reversed to normal transition to the Olduvai event and not the Jaramillo event. Conservatively this could be from under 1 Ma to under 1.7 Ma. Yuanmou has been know since the 60s. More material of uncertain stratigraphic relation to the original hominid teeth was recovered in the work that followed the discovery.
Homo
Lithics hominin teeth hearths
The argument for an very early Pleistocene age (1.7 Ma) is based on correlating their reversed to normal transition to the Olduvai event and not the Jaramillo event. Conservatively this could be from under 1 Ma to under 1.7 Ma. Yuanmou has been know since the 60s. More material of uncertain stratigraphic relation to the original hominid teeth was recovered in the work that followed the discovery.
Homo
Lithics hominin teeth hearths
Fire use (Hearths): James S. R. Dennell R. W. Gilbert A. S. Lewis H. T. Gowlett J. A. J. Lynch T. F. et al. (1989). Hominid Use of Fire in the Lower and Middle Pleistocene: A Review of the Evidence [and Comments and Replies]. Current Anthropology 30(1) 1-26.