Introduction to the Jurassic Period: Dinosaurs from the Jurassic Period are displayed in order from oldest to newest in geological time. Skeleton models of Lufengosaurus, Dicepinosaurus, Shusaurus lichii, Mamenchisaurus and Spiny Tuojiangosaurus are on display. , as well as the plants of that time, cycads, ginkgo and other gymnosperms and ferns.