Chasmosaurinae
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Chasmosaurinae is a subfamily of ceratopsid dinosaurs. They were one of the most successful groups of herbivores of their time. Chasmosaurines appeared in the early Campanian, and became extinct, alon
Chasmosaurus belli RTM 01
Chasmosaurus
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Chasmosaurus is a genus of ceratopsid dinosaur from the Late Cretaceous Period in North America. Its given name means 'opening lizard', referring to the large openings in its frill. With a length of 4
Chasmosaurinae
…or fragmentary remains. Chasmosaurinae is defined officially in the PhyloCode by Daniel Madzia and colleagues in 2021 as "the largest clade containing Chasmosaurus belli and Triceratops horridus, but not Centrosaurus apertus". Below is the result of a phylogenetic analysis by Mallon et al., following the traditional…
Chasmosaurus ROM
George F. Sternberg preparing a C. belli skull in 1914
Holotype of C. kaiseni
Holotype of C. irvinensis at Canadian Museum of Nature