@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Identification of avian flapping motion from non-volant winged dinosaurs based on modal effective mass analysis Before they evolved the ability to fly, two-legged dinosaurs may have begun to flap their wings as a passive effect of running along the ground, according to new research by Jing-Shan Zhao of […]