The gradual evolutionary change – from fast-running, ground-dwelling, bipedal theropods to small, winged, flying birds – probably started about 160 million years ago. It was possibly due to a move by ...

Experts Find Footprints of 'Wild Beasts' Near Antarctic Circle, Fed on Prey Like Smaller Dinosaurs and Turtles In 2022, ...

evolved in theropods before birds. Whether they evolved for warmth, for display, or served some other function is not yet known. But in a small, lightly built bipedal predator leaping into the air ...