Paleogeneticists analyzing DNA from a 50,000-year-old bone fragment found in a cave in Laos have identified a 'ghost lineage' of humans that is distinct from Neanderthals and Denisovans.
The Genetic Puzzle
The genome sequencing revealed that this group separated from the modern human lineage 500,000 years ago but did not go extinct until recently. They co-existed and interbred with the ancestors of present-day Papuans and Indigenous Australians.
Physical Characteristics
While only fragmentary fossils exist, DNA analysis of genes related to morphology suggests they had robust dentition and adaptations to tropical rainforest environments, unlike the cold-adapted Neanderthals.
A Crowded World
This discovery confirms that the Late Pleistocene was a time of rich human diversity, with at least five distinct human species (Sapiens, Neanderthals, Denisovans, Floresiensis, and this new group) sharing the planet simultaneously.
Rewriting Migration Maps
The find suggests that Southeast Asia was a major hub of human evolution and migration, prompting a re-excavation of several archaeological sites in the region.
