Only large bodied Ceratopsian have been described from the Hell Creek/Lance Formations like Triceratops and Torosaurus. Small bodied Ceratopsians do exist and isolated material similar to Leptoceratops gracilis is found.  I believe the type specimen was discovered in Alberta part of the Scollard Formation which is Maastrichtian in age.  Most of these finds are is in the form of isolated teeth however post-cranial material and skull elements are scarce but found.  Dealers/auction sellers and coll