Extinct genus of dinosaurs
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Hexinlusaurus is a genus of basal ornithischian dinosaur from the Middle Jurassic of China. 
Discovery.
The holotype (ZDM T6001, Zigong Dinosaur Museum, Dashanpu, People's Republic of China), consists of an almost complete, articulated skull and some postcranial material, collected from a terrestrial sandstone within the Lower Shaximiao Formation (?Bajocian) at the famous dinosaur-bearing quarries at Dashanpu. A paratype (ZDM T6002) consists of a partial skull and postcranial remains. Previously, it had been described as a species of "Yandusaurus", "Y. multidens" (He and Cai, 1983), but was reclassified as a new taxon by Paul M. Barrett, Richard J. Butler and Fabien Knoll in 2005, who diagnosed this anatomically conservative species as follows: "A small ornithischian dinosaur distinguished from all other basal ornithischians by a single autapomorphy, the presence of a marked concavity that extends over the lateral surface of the postorbital." The etymology of the genus name honors Professor He Xin-Lu (from the Chengdu University of Technology) who originally named the specimen as "Y. multidens" + the Greek "sauros" (=lizard). "Hexinlusaurus" was a small, fleet-footed herbivore.
Before being officially named "Hexinlusaurus", this genus was briefly known under the informal name "Proyandusaurus". This name originally appeared in an abstract attributed to Fabien Knoll, which was apparently published in 1999 without his consent.
Other dinosaurs known from Dashanpu include the sauropod "Shunosaurus", the theropod "Gasosaurus", and the stegosaur "Huayangosaurus".
References.
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