A limb bone and several ribs from a horned dinosaur have been unearthed at a Highlands Ranch construction site where a paleontology dig will continue for the next several days.

A team from the Denver Museum of Nature & Science is exploring the fossil bed at an under construction continuing care retirement community, the museum said Tuesday in a news release.

Crews uncovered the fossils Friday near the Wind Crest retirement community.

“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,” said Dr. Tyler Lyson, curator of vertebrate paleontology at DMNS. “Finds like this, while relatively rare, are a great reminder of how dynamic our planet is and how much more there is out there to discover.”

Since the discovery, Lyson has been working closely with the property owner and workers while determining the size and scope of the bone bed. The fossils were found in a rock layer which dates back 65 million to 68 million years, the release stated.

The site is not open to the public.