Archive: https://archive.today/qT0Gk From the post: >>Newly-published findings detail a remarkable discovery at Dinosaur Ridge, revealing how dinosaurs behaved 100 million years ago on the land that is now Colorado and showing similar traits seen in many modern-day birds. Neffra Matthews, a retired photogrammetrist for the Bureau of Land Management, was part of a research team in 2014 that first found evidence of dinosaur mating dances at Dinosaur Ridge. On a rocky hillside right just past the Dinosaur Ridge trailhead, an area that hundreds pass by every day, the team first noticed the peculiar markings.