The bones were found at a construction site near a retirement community in Highlands Ranch in May in a rock layer that dates back 65 million to 68 million years.
Construction crews are using heavy equipment to dig a deep trench in search for other dinosaur fossils next to the area where the triceratops bones were found.
Of all the dinosaur bones discovered in Colorado, the remains of triceratops have been among the most common, the museum says.
‘It’s always exciting to get a call about possible fossils, and I can’t wait to share more details as we continue to dig,’ Dr Tyler Lyson, curator of vertebrate paleontology at the museum, said in a written statement.
Dr Lyson studies the evolution of dinosaurs and turtles and is particularly interested in what was occurring in the Rocky Mountain region 66 to 68 million years ago, which is the age of the rock layer where the fossils are embedded.
Since the discovery occurred at an active construction site, Dr Lyson and his team have worked closely with Wind Crest and Brinkmann, the firm behind the dig, to safely explore the site and document the fossils.
Construction has continued while the Museum team worked to determine the number and type of fossils.