The Rise and Fall of the Dinosaurs EASC 103 (3)

Dinosaurs ruled our planet for nearly 150 million years until the abrupt extinction of all non-avian (non-bird) dinosaurs, approximately 66 million years ago. We examine geologic time, fossils and biological classification, and investigate the rise and fall of the theropods, sauropods, ornithopods, stegosaurs, ankylosaurs, ceratopsians, and pachycephalosaurs. Breadth-Science.