
100-Million-Year-Old Footprints Reveal a New Armored, Club-Tailed Dinosaur
About 100 million years ago, a previously unknown armored dinosaur wielding a clubbed tail lumbered through the Canadian Rockies. The species resembled the well-known ankylosaurus (Nodosaurid ankylosaurs) — but with two major differences. The first-ever identified footprints of this species sported only three toes (putting it into the ankylosaurid ankylosaurs category), instead of four (belonging…