Explore the fascinating journey of dinosaur evolution in the Triassic period through this 51-minute video lecture. Delve into the origins of these prehistoric creatures, examining their early appearances and behaviors. Learn about the precursors to dinosaurs, including Pterosaurs and Dinosauromorphs like Lagosuchus. Discover how these ancient reptiles moved, from quadrupedal locomotion to their unique launching techniques. Investigate the defining characteristics that separate true dinosaurs from their ancestors, and examine the earliest known dinosaur footprints. Conclude by understanding the impact of the Triassic-Jurassic extinction event on dinosaur evolution, gaining a comprehensive overview of the early stages of dinosaur development and their place in Earth's prehistoric ecosystem.