''' Paleontologists have described a new genus and species of pachycephalosaurid dinosaur from five fossil specimens found in the Late Cretaceous Two Medicine Formation of Montana, the United States. '''
''' The new dinosaur species lived in North America during the Late Cretaceous epoch, some 75 million years ago. Dubbed Brontotholus harmoni, the ancient herbivore was approximately 3 m (10 feet) long.
It belongs to Pachycephalosauridae, a family of bipedal, dome-headed dinosaurs within the ornithischian clade Pachycephalosauria.
“The dome-headed ornithischian clade Pachycephalosauria possesses a distinctive suite of morphological features,”
