Hexinlusaurus inherits from the ornithischian dinosaur which originates from Middle Jurassic in China, the Hexinlusaurus holotype with the name ZDM T6001 maintained in the Zigong Dinosaur Museum from Dashanpu the People's Republic of China having a fully finished segmented skull and also has postcranial fragments from the skull gathered from the Lower Shaximiao Formation under the terrestrial sandstone in the popular quarries commonly known for its dinosaur fossil collections in the place of Dashanpu, another specimen obtained which only had parts of skull fragments with some postcranial fragments.
Initially was categorized to come under the family of Yandusaurus known to be Y. multidens named by He and Cai in the year 1983 but later categorized to come under another family by Paul M. Barrett, Richard J. Butler and Fabien Knoll in the year of 2005, the animal was described based on its anatomy as a dinosaur coming under the ornithischian family small in size , but the Hexinlusaurus is sepertaed from the rest of the members due to a concave curve improving from the lateral surfaces of the postorbital region.
The animals specific name was given by the Professor He Xin-Lu from the Chengdu University of Technology, the animal was named as Y. multidens along with the sauros added on to it.
The Hexinlusaurus was a herbivore with the foot helping it to be mobile, small in the size, the similar dinosaurs gathered from that of the Dashanpu are the Shunosaurus coming under the saurapod category ,the Gasosaurus comes under the theropod category and also the Huayangosaurus coming under the stegosaur category.
Initially before naming it as Hexinlusaurus the animal was called with an informal name known to be the Proyandusaurus, the name was found in the abstract submitted by Fabien Knoll who declared it to be released not in the light of him.
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