Can I just ask where you have got that information from, it sounds quite far fetched. The horns and neck muscles of a triceratops were probably unable to carry the weight of an infant big enough to fit on them. It is more likely that the herd of triceratops would protectively encircle their young leaving the predator facing a wall of horns than carry them away. They were not fast enough or intelligent enough to have done this.
Hovever I would say that my favourite dinosaurs would have to be the Aves, or Birds.