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3900s
3800s
Ancient - 500A 3700s Future
3600s
3500s
Haplogroup R1a Slavs 25,500 - 3800 17,700 R1a subclade M417 Slavs 3800 - Present
Wave 1 of Expansion. Early PIE Period 4500 - 3500 1000
Cucuteni–Trypillia Culture Moldova  5500 - 2750 2750
Khvalynsk of Kurgan Culture Volga River, Russia 4900 - 3500 1400
Sredny Stog of Kurgan Culture Ukraine 4500 - 3500 1000
Samara of Kurgan culture Russia 4250? - 3750? 500?  
Kurgan Culture Russia  4000 - 2000 2000
3900s
3800s
3700s
3600s
3500s
39 - 1600 Banded flint nodule in wall of an adit in Krzemionki mine complex Poland