"Y." robustus, and an unnamed taxon; and the theropods Lukousaurus, Eshanosaurus, and Coelophysis sp. Changpeipus footprints have been found in the Lufeng Formation. In 2009, a study led by Li-Da Xing found that footprints from the Lufeng Formation were unique among ichnogenera, and named the footprints Changpeipus pareschequier. The study hypothesized that they were produced by a coelophysoid; there are many possible trackmakers, however, including both Sinosaurus and Coelophysis sp. References Early Jurassic dinosaurs of Asia Prehistoric neotheropods Fossil taxa described in 1940 Taxa named by Yang Zhongjian Paleontology in Yunnan