The Tham Khuyen Cave is a palaeontological formation located in Vietnam. It dates to the Jurassic period. The cave is located in Lang Son province, about 125 kilometers northeast of Hanoi.
See also List of fossil sites
References Vickers-Rich, Patricia & Rich, Thomas Hewett (1993); Wildlife of Gondwana. Reed. ISBN 0-7301-0315-3 Ciochon, R.; et al. (1996). "Dated Co-Occurrence of Homo erectus and Gigantopithecus from Tham Khuyen Cave, Vietnam". Proceedings of the National Academy of Sciences of the United States of America. 93 (7): 3016–3020. Bibcode:1996PNAS...93.3016C. doi:10.1073/pnas.93.7.3016. PMC 39753. PMID 8610161.
