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Chasmosaurus was the oldest of the long-frilled, horned ceratopsian dinosaurs, whose family includes Triceratops. It was a medium-sized plant-eater that had a long neck frill with large holes in the bone and narrow structures to support the weight of the frill. It would have had skin stretched over the holes in its frill. Chasmosaurus had medium-sized horns over its eyes, and a smaller nose horn.[2]

Judging from the monotypic bone beds of the Chasmosaurus fossils, this animal traveled in single species herds. Since the frill of a Chasmosaurus would not be a very effective defensive weapon, there is speculation that it may have been used for identification and attracting mates. New discoveries suggest the possibility that Chasmosaurus and Pentaceratops might belong in the same genus.[2]

Wikipedia has a more detailed and comprehensive article on Chasmosaurus


Jurassic Park III: Park Builder

Chasmosaurus is one of the dinosaurs that can be cloned in Jurassic Park III: Park Builder. It is no. 097 of the Herbivore Twos.

Jurassic World: Evolution

Chasmosaurus/JW: E

Chasmosaurus is in Jurassic World: Evolution. Its coloration is mainly reddish-brown with a creamy belly, with a faded blue with horizontal red streaks on the frill.


A Chasmosaurus (misspelled "Chasmasaurus" on the box) figure appears in the Kenner toy line The Lost World Series 1. A repaint of this figure appeared in Jurassic Park: Dinosaurs.

Behind the Scenes

  • The Chasmosaurus in Jurassic World: Evolution looks similar to the Planet Dinosaur [w:c:planetdinosaur:Chasmosaurus|Chasmosaurus].
  • One of the sounds of the Chasmosaurus from Jurassic World: Evolution are those from the modified versions of bear sounds.


  1. The Lost World Series 1, Chamasaurus box.
  2. 2.0 2.1 2.2 2.3 2.4 Jurassic Park Institute, Dinopedia, Chasmosaurus. Link.