While centrosaurines and ceratopsids in general are abundant in the Late Campanian of northern Laramidia. they are much less commonly found in southern Laramidia. This has supported hypotheses of dinosaur provinciality and endemism in the Late Cretaceous with the delineation of at least two separate faunal zones. north and south Laramidia. https://leoners.shop/product-category/pillow-protector/