Kosmoceratops was one of the most striking ceratopsians of all time. This dinosaur not only had the "typical" horns and frill of a ceratopsian, but a number of "extra" horns displayed on it's frill. Kosmoceratops is often considered one of the most ornate dinosaurs ever found. Kosmoceratops was a mid-sized ceratopsian at just under 16 feet long and roughly 1.5 tons in weight. Kosmoceratops lived in North America around 75 million years ago.