See photos from the rare discovery of a dinosaur skull in Thornton
According to Joe Sertich, curator of dinosaurs at the Denver Museum of Nature and Science, the recent find has been identified as a likely triceratops skull. (Editor's note: Scientists now say the skull is from a torosaurus, a related but rarer dinosaur)
City of Thornton officials say they stumbled upon a rare find while breaking ground on a new fire and police substation at 132nd Avenue and Quebec Street.