Neanderthals in central Asia and Siberia

Area of Science:

• Paleogenetics
• Human Evolution
• Archaeology

Background:

• Neanderthal morphological traits emerged in Europe over 400,000 years ago and in Western Asia 150,000 years ago.
• These traits increased in prevalence before disappearing around 30,000 years ago.
• Fragmentary fossil evidence often complicates unambiguous identification of Neanderthal remains.

Observation:

• Determining the full geographic distribution of Neanderthals has been challenging due to fossil limitations.
• Mitochondrial DNA (mtDNA) sequences were analyzed from hominid fossils discovered in Uzbekistan and the Altai region.
• These ancient DNA sequences were compared to known European Neanderthal mtDNA variation.

Findings:

• The mtDNA sequences from the Central Asian and Siberian fossils align with the European Neanderthal mtDNA variation.
• This genetic evidence suggests a significant eastward expansion of the Neanderthal geographic range.
• Neanderthals likely inhabited areas at least 2,000 km east of previously established boundaries.

Implications:

• The findings necessitate a revision of the established geographic range of Neanderthals.
• This expands our understanding of Neanderthal dispersal and adaptation across Eurasia.
• Further paleogenetic research can refine the timeline and extent of hominid migrations.