Alix Hines

A rare triceratops skeleton was discovered by construction workers in Colorado.

The bones and skull were partially unearthed last Friday at the construction site of a new public safety building in Thornton, Colorado.

Denver Museum of Nature and Science curator of dinosaurs Joe Sertich said it is one of three triceratops skulls that’s been found along the Front Range and had likely been there for at least 66 million years.

“It is incredible to have this find occur in our backyard,” Sertich said in a statement. “We’ve found two dozen horned dinosaurs—including several new species—in the past couple of years outside of Colorado. Some are the largest and most complete skeletons ever recovered. Finds like this help us to understand dinosaur evolution and behavior.”


So far, crews have unearthed a horn and shoulder blade. Triceratops had two big horns over its eyes and a smaller nose horn.

Sertich said most fossils found in the Denver area are from the Ice Age roughly 10,000 to 12,000 years ago.