Chasmosaurinae

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Chasmosaurines
Temporal range: Late Cretaceous, 76.5–66 Ma
Chasmosaurus bellis RTM 01.jpg
Chasmosaurus belli skeleton, Royal Tyrrell Museum of Palaeontology
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Family: Ceratopsidae
Subfamily: Chasmosaurinae
Lambe, 1915
Type species
Chasmosaurus belli
Lambe, 1902
Subgroups

See text.

Chasmosaurinae is a subfamily of ceratopsid dinosaurs. Triceratops is a well-known example. They were one of the most successful groups of herbivores of their time. Chasmosaurines appeared in the early Campanian, and became extinct, along with all other non-avian dinosaurs, during the Cretaceous–Paleogene extinction event. Broadly, the most distinguishing features of chasmosaurinae are prominent brow horns and long frills lacking long spines; centrosaurines generally had short brow horns and relatively shorter frills, and often had long spines projecting from their frills. Chasmosaurines are currently known definitively from rocks in western Canada, the western United States, and northern Mexico.

Genera

Below is the phylogeny of Brown et al.[4]

Ceratopsidae

Centrosaurinae


Chasmosaurinae


Vagaceratops



Kosmoceratops










Chasmosaurus belli



Chasmosaurus russeli




Mojoceratops




Agujaceratops





Utahceratops



Pentaceratops






Bravoceratops



Coahuilaceratops







Anchiceratops



Arrhinoceratops



Triceratopsini

Regaliceratops



Eotriceratops



Ojoceratops




Titanoceratops




Nedoceratops





Torosaurus latus



Torosaurus utahensis





Triceratops horridus



Triceratops prorsus











See also

References

  1. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).
  2. Spencer G. Lucas, Robert M. Sullivan and Adrain P. Hunt (2006). Re-evaluation of Pentaceratops and Chasmosaurus (Ornithischia: Ceratopsidae) in the Upper Cretaceous of the Western Interior. p. 4.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  3. Michael J. Ryan,Brenda J. Chinnery-Allgeier (n.d.). New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium. Royall Tyrell Museum. p. 500.<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  4. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).

External links

es:Chasmosaurinae