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Scientists discovered a nearly complete fossil of a tiny bird-like dinosaur in Argentina that finally explains how a mysterious group of prehistoric animals evolved. The breakthrough ends decades of confusion and opens new chapters in understanding how dinosaurs spread across ancient Earth.
Scientists discovered a nearly complete skeleton of a tiny bird-like dinosaur in Argentina that fills a decades-long gap in understanding how these mysterious creatures evolved. The "missing link" fossil proves these dinosaurs were tiny long before they developed their famous stubby arms and ant-eating adaptations.