What is the evidence?

observation

Ancient genomes place the rapid expansion of the dominant modern domestic horse lineage after about 2200 BCE from the lower Volga-Don region.

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Review and provenance

Specialist reviewer: not recorded. Review date: not recorded.

Dataset workflow: proposed. This is separate from specialist review.

Confidence describes the stated assessment; it does not certify expert approval. How review works.

Chronology

Dating intervals may describe uncertainty or phases; their width alone does not establish event duration.

Preferred assertion

2200 BCE–1800 BCE

Precision: range

high

Dates sampled lineages or individuals, not cultural or linguistic boundaries.

Interpretation and caveats

The lineage spread forms biological context for later horse economies, but it does not directly date riding, chariot use or human-language dispersal at Central Asian sites.

Event context

Classification

Event type: domestic horse lineage expansion

Evidence layer: archaeological

Timeline role: cross regional context

Why it matters to the timeline

The lower Volga-Don is an explicitly requested connected zone and the genomic event is essential context for evaluating horse-use claims.

Research notes

  • Provides the horse-lineage chronology. Role: provides scientific evidence. Locator: Genome results and modeled expansion.

Evidence and sources

Where to go next

Referenced records