Triceratops is a very strong tame in early game, they can kill an Allo, Carno, Sarco, A pack of Argentavis, Megalodon, and anything that is strong, but only when you mount it. But Trike is very slow, so always upgrade their movement, make them follow you, and when you encounter a strong dino, mount the Trike and kill the dino.
I can not stress enough to my friends how useful the trike is. Early game it makes a great pack animal. Late game in groups of three or four it can be used as a decent battle mount. Taming a trike early on can be a great way to start a large base and keep you well fed with berries.