Chialingosaurus (meaning "Chialing Lizard") is a genus of stegosaur similar to Kentrosaurus from the Upper Shaximiao Formation, Late Jurassic beds in Sichuan Province in China. Its age makes it one of the oldest species of stegosaurs, living about 160 million years ago. Since it was an herbivore, scientists think that Chialingosaurus probably ate ferns and cycads, which were plentiful during the period when Chialingosaurus was alive. Its name is taken from the Chialing River in southern China. Perhaps growing up to four metres long and weighing just 150 kg, much less than other later stegosaurs.
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