flora between the northern and southern parts of Laramidia during the Campanian. Particularly, in the Texan Aguja Formation, dicotyledons Metcalfeoxylon and Agujoxylon were predominant. In contrast, coniferous plants are more abundant in northern regions. Within the Aguja fauna, Yehuecauhceratops was relatively small compared to the giant Coahuilaceratops, with Agujaceratops in between; this suggests some level of size-based diet partitioning among the three ceratopsids. See also Timeline of ceratopsian research 2017 in archosaur paleontology References Centrosaurines Campanian genus first appearances Campanian genus extinctions Late Cretaceous dinosaurs of North America Cretaceous Mexico Fossils of Mexico Fossil taxa described in 2017 Nahuatl Ornithischian genera