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→Evolutionary claims
==Evolutionary claims==
==Evolutionary claims==
[[File:Cerotopsiansfig037a.jpg|left|200px|thumb|comparison of ''Triceratops'' and ''Torosaurus'' skulls.]]
Paleontologists once believed there were several species of ''Torosaurus'', judging from the large number of [[fossil]] remains, but it is now thought that there were just two, ''T. latus'' and ''T. utahensis''; a third species (''T. gladius'') was investigated and found to have been a is-assigned name applied to ''T. latus''. According to evolution, they are descended from ''Psittacosaurus'', a small bipedal ornithopod whose remains were found in central Asia, and from there the ceratopsian line migrated to North America.<ref>''The Complete Book of Dinosaurs'', by Dougal Dixon, Anness Publishing, 2006</ref>
Paleontologists once believed there were several species of ''Torosaurus'', judging from the large number of [[fossil]] remains, but it is now thought that there were just two, ''T. latus'' and ''T. utahensis''; a third species (''T. gladius'') was investigated and found to have been a is-assigned name applied to ''T. latus''. According to evolution, they are descended from ''Psittacosaurus'', a small bipedal ornithopod whose remains were found in central Asia, and from there the ceratopsian line migrated to North America.<ref>''The Complete Book of Dinosaurs'', by Dougal Dixon, Anness Publishing, 2006</ref>