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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== *Family Ceratopsidae * *Subfamily Chasmosaurinae * * * ''Agujaceratops'' - (Texas, USA) * * * ''Anchiceratops'' - (Alberta, Canada) * * * ''Arrhinoceratops'' - (Alberta, Canada) * * * ''Bravoceratops'' - (Texas, USA) * * * ''Chasmosaurus'' - (Alberta, Canada) * * * ''Coahuilaceratops'' - (Coahuila, Mexico) * * * ? ''Dysganus'' - (Montana, USA) * * * ''Judiceratops'' - (Montana, USA) * * * ''Kosmoceratops'' - (Utah, USA) * * * ''Medusaceratops'' - (Montana, USA) * * * ''Mercuriceratops'' - (Montana, USA & Alberta, Canada) * * * ''Mojoceratops'' - (Alberta & Saskatchewan, Canada) * * * ''Pentaceratops'' - (New Mexico, USA) * * * ''Utahceratops'' - (Utah, USA) * * * ''Vagaceratops'' - (Alberta, Canada) * * * Tribe Triceratopsini * * * * ''Agathaumas'' - (Wyoming, USA) * * * * ''Eotriceratops'' - (Alberta, Canada) * * * * ''Ojoceratops'' - (New Mexico, USA) * * * * ''Polyonax'' - (Colorado, USA) * * * * ''Regaliceratops'' - (Alberta, Canada) * * * * ''Tatankaceratops'' - (South Dakota, USA) * * * * ''Titanoceratops'' - (New Mexico, USA) * * * * ''Torosaurus'' - (Wyoming, Montana, South Dakota, North Dakota, & Utah, USA & Saskatchewan, Canada) * * * * ''Triceratops'' - (Montana & Wyoming, USA & Saskatchewan & Alberta, Canada) Below is the phylogeny of Brown ''et al''. |2=''Agujaceratops'' }} |2= }} |2= }} |2= }} }} }} }} }} }} }} }} ImageSize = width:1500px height:auto barincrement:15px PlotArea = left:10px bottom:50px top:10px right:10px Period = from:1824 till:2100 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:50 start:1824 ScaleMinor = unit:year increment:10 start:1824 TimeAxis = orientation:hor AlignBars = justify Colors = #legends id:CAR 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「chasmosaurinae」の詳細全文を読む スポンサード リンク
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