When paleontologist Mike Triebold unearthed part of a dinosaur shoulder blade in Montana three years ago, he had no idea that he had stumbled upon a new species.
“When we collected it, we at first thought it was what is known as an Avaceratops, which is a known but rare Ceratopsian,” he said. “After we were working on it for a while, and began really thoroughly preparing the bones and analyzing them and comparing them, we realized, ‘Wait a minute. This is not an Avaceratops. It’s a brand new species.’ ”