Coahuilaceratops

Coahuilaceratops (meaning "horned face from Coahuila") is a genus of chasmosaurine ceratopsian dinosaur that lived during the early Maastrichtian age of the Late Cretaceous epoch, about 71.5 to 70.5 million years ago in what is now northern Mexico. It contains a single species, Coahuilaceratops magnacuerna.

== Discovery and naming == Fossils of Coahuilaceratops were discovered by Claudio de Leon near the town of Porvenir de Jalpa in the south of Coahuila, Mexico in 2001 and excavated in 2003. The deposits where the remains were found were originally assigned to the Cerro del Pueblo Formation (upper Campanian; ca. 73–72.5 Ma), but in a 2024 stratigraphic revision they were assigned to the overlying Cerro Huerta Formation (lower Maastrichtian; about 71.5–70.5 million years). This makes Coahuilaceratops the first dinosaur described from the Cerro Huerta Formation. The lower Maastrichtian age of the deposits is consistent with the relatively derived phylogenetic position of Coahuilaceratops.