Paleontologists once believed there were several species of Triceratops, judging from the large number of [[fossil]] remains, but it is now thought that there were just two, ''T. horridus'' and the larger ''T. prorsus''. In the evolutionary paradigm, they would have been among the last of the dinosaurs, living in the late [[Cretaceous]] period. Fossils of Triceratops have so far been found only in North America.<ref>''The Complete Book of Dinosaurs'', by Dougal Dixon, Anness Publishing, 2006</ref> | Paleontologists once believed there were several species of Triceratops, judging from the large number of [[fossil]] remains, but it is now thought that there were just two, ''T. horridus'' and the larger ''T. prorsus''. In the evolutionary paradigm, they would have been among the last of the dinosaurs, living in the late [[Cretaceous]] period. Fossils of Triceratops have so far been found only in North America.<ref>''The Complete Book of Dinosaurs'', by Dougal Dixon, Anness Publishing, 2006</ref> |