Torosaurus is not Triceratops: ontogeny in chasmosaurine ceratopsids as a case study in dinosaur taxonomy.
BackgroundIn horned dinosaurs, taxonomy is complicated by the fact that the cranial ornament that distinguishes species changes with age.Based on this observation, it has been proposed that the genera Triceratops and Torosaurus are in fact synonymous, with specimens identified Ski de fond - Homme - Sous-Vetements - Laine as Torosaurus representing