During the past decade, three taxa of ceratopsid ornithischians have been described from
Mexico. Apparently, this group experienced a regional diversification in this area. To date …

The horned dinosaurs (Ceratopsidae) were a diverse family of herbivorous dinosaurs
originating in the Late Cretaceous in western North America (Laramidia). As one of the most …

Abstract Background The Belly River Group of southern Alberta is one of the best-sampled
Late Cretaceous terrestrial faunal assemblages in the world. This system provides a high …

An associated incomplete skeleton of a ceratopsid dinosaur from the Campanian deposits of
the Allison Member of the Menefee Formation in New Mexico, USA is described. Although it …

We analyzed samples for paleomagnetism, 40 Ar/39 Ar detrital sanidine ages, and
mammalian fauna to produce a precise chronostratigraphic framework for the Upper …

Medusaceratops lokii Ryan, Russell, and Hartman, 2010 is an enigmatic taxon of ceratopsid
represented by partial parietals from the Mansfield bonebed in the Campanian Judith River …

Ceratopsids (“horned dinosaurs”) are known from western North America and Asia, a
distribution reflecting an inferred subaerial link between the two landmasses during the Late …

The lower shale member of the Aguja Formation is one of only a few terrestrial stratigraphic
units of early Campanian age in North America. Apart from a prolific microfossil site that …

A partial skull (CMN 8804) of a ceratopsid from the upper unit of the Campanian Oldman
Formation of Alberta is the first Canadian example of the newly established …

Abstract The Late Cretaceous of western North America supported diverse dinosaur
assemblages, though understanding patterns of dinosaur diversity, evolution, and extinction …