This is my portrayal of the semitropical jungles that covered much of western North America (or “Laramidia”) during the Late Cretaceous Period, the time of dinosaurs such as Triceratops, Ankylosaurus, and Tyrannosaurus. Flowering plants such as palms and broadleaf trees were taking over during this period, but they would have coexisted with older plant lineages such as ferns, cycads, gingkos, and conifers related to redwood, bald cypress, and monkey-puzzle trees. Perhaps the best modern-day analog for this type of ecosystem would be the forests and wetlands of Florida in the southeastern United States of America.