Ceratopsia or Ceratopia (/ˌsɛrəˈtɒpsiə/ or /ˌsɛrəˈtoʊpiə/; Greek: "horned faces") is a group of herbivorous, beaked dinosaurs that thrived in what are...

between 150.8 and 145.5 million years ago. Chaoyangsaurus belonged to the Ceratopsia (Greek for "horned faces"). Chaoyangsaurus, like all ceratopsians, was...

(2010) proposed that the best assignment for the type material may be Ceratopsia incertae sedis. P. neimongoliensis and P. ordosensis? Two new species...

the history of dinosaurs, since it is the type genus for which both the Ceratopsia and the Ceratopsidae have been named. The first remains referred to Ceratops...

Marginocephalia and Ornithopoda. The former includes clades Pachycephalosauria and Ceratopsia, while the latter typically includes Hypsilophodon and the more derived...

animals butting each other's heads, as well as for display. Within the Ceratopsia, Achelousaurus lies within the clade Pachyrostra (or "thick-snouts")....

skin impression samples. Chasmosaurus was in 1915 by Lambe within the Ceratopsia assigned to the Chasmosaurinae. The Chasmosaurinae usually have long frills...

"New dinosaur from southern Alberta, representing a new family of the Ceratopsia". Geological Society of America Bulletin. 58: 1230. doi:10...

Press. ISBN 978-0-691-02882-8. Lull, R. S. (1933). "A revision of the Ceratopsia or horned dinosaurs". Memoirs of the Peabody Museum of Natural History...

thigh bone bows outwards. Osborn originally assigned Pentaceratops to Ceratopsia. Within this group Pentaceratops belonged to the Ceratopsinae or Chasmosaurinae...