Ceratopsidae (sometimes spelled Ceratopidae) is a family of ceratopsian dinosaurs including Triceratops, Centrosaurus, and Styracosaurus. All known species...

anagenetic lineage. In 1995, Sampson formally placed Achelousaurus in the Ceratopsidae, more precisely the Centrosaurinae. In all analyses, Einiosaurus and...

and Triceratops. In 1890 Marsh classified them together in the family Ceratopsidae and the order Ceratopsia. This prompted Cope to reexamine his own specimens...

(2021). "The oldest centrosaurine: a new ceratopsid dinosaur (Dinosauria: Ceratopsidae) from the Allison Member of the Menefee Formation (Upper Cretaceous,...

fragmentary nature of the remains, it can only confidently be assigned to Ceratopsidae. Polyonax mortuarius was collected by Cope himself in 1873 from northeastern...

Tanke, D.H. (2008). "A new species of Pachyrhinosaurus (Dinosauria, Ceratopsidae) from the Upper Cretaceous of Alberta, Canada." pp. 1-108. In: Currie...

the bizarre and extravagant variation seen in different members of the Ceratopsidae. This observation is highly suggestive of what is now believed to be...

Peabody Museum of Natural History 3(3): 1–175 Sternberg, C.M., 1940, "Ceratopsidae from Alberta", Journal of Paleontology 14(5): 468–480 Paul, G.S., 1987...

conducted by Sampson et al. in 2010: In 1891, Marsh placed Torosaurus in the Ceratopsidae family of Ceratopsia (Greek: "horned faces"), a group of herbivorous...

(1997). "Craniofacial ontogeny in centrosaurine dinosaurs (Ornithischia: Ceratopsidae): taphonomic and behavioral phylogenetic implications". Zoological Journal...