Filippovka kurgans date 450-300 BCE as Sauromatian-Sarmatian transition north of Caspian. Artifacts display Scythian Animal Style with Achaemenid elements made for nomads. Early Sarmatian warriors wore iron helmets, scale armor, carried 200-arrow quivers, spears, akinakes swords, axes. Burials combine Western Timber Grave/Andronovo and Eastern traits. Early Sarmatians exhibit increased eastern Asiatic features over Sauromatians. Filippovka skulls differ sharply from Scythians and Volga Sarmatians in shape and face. Filippovka skulls match Saka from Kazakhstan/Aral Sea and Usuns from eastern Kazakhstan. Southern Urals mixed European Srubnaya/Andronovo with Asian nomads from Iron Age. Early Saka from Central Asia/Altai settled Urals from 7th century BCE. Itkul, Tasmola, Khorezm groups assimilated into Early Sarmatians. Nomads formed uniform Central Asian-origin union by 5th-4th centuries BCE. Filippovka defines Prokhorovka period of Early Sarmatians with foreign elements. Warriors prototype medieval knights 2000 years earlier.