This national monument was established in 1996 in part for the preservation and study of its fossils, and the surveys there have yielded a wide array of unique dinosaur fossils. , Two clades (groups consisting of all taxa that share a common ancestor) of ceratopsid dinosaurs—Centrosaurinae and Chasmosaurinae—are recognized based mainly on the elaborate ornamentation of their skull roofs. They suggested that the close relationship between Kosmoceratops and Spiclypeus from Montana in the north indicated there had been some short-lived geographic connection. With fifteen well-developed horns and horn-like structures, Kosmoceratops possessed the most ornate skull of any known dinosaurs; this included one nasal horncore, two postorbital horncores, two epijugals, and ten well-developed epiossifications at the back of the frill. Just better. The new Kosmoceratops has five times as many horns on his head as his cousin, as is the richly decorated dinosaur known to man. As a ceratopsid, it would have been a quadruped with a heavily constructed skeleton, a large pelvis, and a relatively shortened tail. Eric Roberts at the James Cook University, Australia, another member of the team, says the 13 horns adorning Kosmoceratops are not strong enough to … song / Buddy and Tank Triceratops are best friends, and they share a love for comparing features. Ceratopsians, for example, had elaborate nasal horn, brow horn, jugal boss, frill midline, and frill edge features, as well as differences in body size and proportions, while the absence or presence of a single horn would have been enough to differentiate between sympatric species. , With his 2014 assignment of skull CMN 8801 to Kosmoceratops sp. Kosmoceratops is distinguished by an ornate skull, the most ornate of any known dinosaur. What we do.  In 2018, paleontologist Andrew Knapp and colleagues examined whether the diverging ornamental traits of ceratopsians were correlated with sympatricity between two or more species, as would be predicted by the "species recognition hypothesis". The subadult specimen UMNH VP 16878 was found scattered across an area of 3 m2 (32 sq ft), and the high degree of disarticulation and broken parts indicate that the specimen was skeletonized and decomposed before its burial in silty mudstone lithofacies. They noted that many large ceratopsians had openings in their frills, making them of little use in defense, and that the wide variety in the size and orientation of their horns did not have an obvious function in combat. By 76 million years ago, the supposed barrier dividing the lineages must have disappeared, as they coexisted afterwards; the dividing line appears to have been located somewhere between southern Utah and northern Montana. In all, Kosmoceratops possesses a total of 15 horns-one over the nose, one atop each eye, one at the tip of each cheek bone, and ten across the rear margin of the bony frill-making it the most ornate-headed dinosaur known. Alternatives to the existence of a barrier include that the discrete provinces were separated by zones of faunal mixing, or that there was a continuous gradient or cline throughout the altitude, with no distinct endemic zones. In 2010, Sampson and colleagues placed Kosmoceratops in the latter group due to the premaxilla having a narial strut and a triangular process, as well as the presence of an elongated squamosal bone. Kosmoceratops appeared in the preschool show Dinosaur Train (Scott D. Sampson the namer to this dinosaur appeared in this show). , In a 2017 Master's thesis, paleontologist Nicole Marie Ridgwell described two coprolites (fossilized dung) from the Kaiparowits Formation which, due to their size, may have been produced by a member of one of three herbivorous dinosaur groups known from the formation: ceratopsians (including Kosmoceratops), hadrosaurs, or ankylosaurs (rarest of the three groups). Overall, there are fifteen horns or horn-like structures on the skull, the most of any ceratopsian. , Kosmoceratops is known from the Kaiparowits Formation of Utah, which dates to the late Campanian age of the Late Cretaceous epoch, and occurs in a stratigraphic range spanning the upper part of its lower unit to the upper part of its middle unit, in sediments dating to 76.4–75.5 million years ago. As they found Vagaceratops likely to be the sister taxon of Kosmoceratops, they suggested it should be maintained as a distinct genus from Chasmosaurus, as its placement would probably remain unstable until chasmosaurines are better understood.  The full name can be translated as "ornate horned face of Richardson". 45 percent of the postcranial skeleton was thought to be preserved, most of which was still under preparation by 2010. It has horns above the eyes which are thin, long, and pointed. The cladogram below is based on Mallon and colleagues' 2016 analysis: , Kosmoceratops is estimated to have been 4.5 m (15 ft) long and to have weighed 1.2 t (1.3 short tons).  The same year, Mallon and colleagues found P. aquilonius to be an invalid nomen dubium (dubious name) and agreed that there had been a dispersal barrier between north and south Laramidia. Smaller horn on its nose and two on its own being deposited at! 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