The creature looked like a three-ton rhino crossed with a tropical lizard. Ten little horns dangled over its giant forehead like frills on a jester’s cap and two more perched over the eyes. Spikes poked out of each cheek. A blade jutted from its nose.
Paleontologists suspect this freakish beast, named kosmoceratops, was brightly colored to attract mates. It prowled the coastal swamps of southern Utah 79 million years ago.
It is one of more than two dozen new species of dinosaurs discovered in Grand Staircase-Escalante in the 21 years since President Clinton preserved it as a national monument.
The bounty has stunned scientists. Most of this 1.9 million acres of desert wilderness, one of the world’s richest fossil sites for studying the age of dinosaurs, remains unexplored...