This scene depicts recreated dinosaurs and dinosauromorphs from the Hayden Quarry of northern New Mexico. The coexistence during the Late Triassic of the dinosaur precursors Dromomeron romeri (lower left) and a Silesaurus-like animal (bottom center), and the dinosaurs Chindesaurus bryansmalli (top center, with crocodylomorph in its mouth) and a coelophysoid theropod (upper right), indicates that the rise of dinosaurs was prolonged rather than sudden. Credit: Donna Braginetz, Science