Triceratops for me. What’s not to admire in a herbivore that can take out a t-rex in a one-on-one fight.
Oh, I don’t know. The thread has been pretty entertaining, which is all that one can ask.
I’m not really surprised that triceratops is the “winner” of the thread. But face it, they just don’t have T. Rex’s star power. Imagine the Jurrasic Park franchise with a rampaging triceratops as the main dino…it just wouldn’t be the same.
It was a movie quote from Meet the Robinsons. The bad guy tells a T. Rex to grab the boy, at which point the T.Rex says (in subtitles) “I can’t, I have this big head, and little hands. I don’t think you thought this through.”
Eta: http://www.youtube.com/watch?v=IWoM8Fr1z4w&feature=youtube_gdata
Mine got mentioned in the op; I love me some Ankylosaurus. Armor plated, giant club, and perfect for riding what more could you ask for from a pet dino. Not to mention some theories show spikes coming out the sides of it’s tail which only make it cooler.
Spinosaurus was probably a fish-eater, which makes it more likely than “might”.
And the two would never have gone anywhere near one another simply because they lived at different times. Spinosaurus had gone extinct a good 25 million years before Tyrannosaurus came on the scene.
Generally speaking, ankylosaurs come in three flavors: nodosaurids, polocanthids, and ankylosaurids. Ankylosaurus, of course, was one of the later - a group known for heavy armor, but no spikes. Polocanthids, such as Gastonia, were the really spiky guys. Many older restorations which show Ankylosaurus with spikes were based on incomplete specimens and assumptions about how closely related they were to the actually-spiky guys.
Pfft. Pedant.
Maybe. But it brings up a point – although it’s a fallacy to think that evolution makes animals “more advanced,” the dinosaurs that lived right before the Chicxulub impact weren’t going to be improved upon. 
Seriously, though, T. Rex might not have been the biggest, but he was a very sophisticated animal, with specialized teeth and that fantastic bite, a big brain (by dino standards), highly developed senses (especially smell) and evidence for hunting in packs. Considering how much more we’ve been learning about dinosaurs over the last 120 years or so, it’s remarkable that, even with new information about T. Rex itself, and many new “competing” dinosaurs found, our initial impression of T. Rex as the ultimate badass still seems to hold up.
no no no, THESE would be the best dinosaurs evar:
Suddenly I understand the reason for grouping together the Thyreophora. Gastonia looks like an ankylosaur did the deed with a stegosaur! 
Mine too!
The Sackosaurus. It had the largest set of um, you know in the dinosaur kingdom. Okay, I made that up.
I’d vote for Allosaurus, a litle smaller than the T-rex, but sicneticts thing faster, and just as dangerous.
Oh wow, I have a lot of company. Add me to team triceratops. They just look so cool. And what whynot said.
I always thought the stegasaurus was cool, too. All those spinal plates, like a dragon.
T-rex had small hands, and looked comical.
Trump is a T-Rex.
Stegosaurus all the way.
Stegamasaurususes. 
There’s a whole lotta “Fuck you!” in that tail.
Stegasarus be like “Doop de doop de doo, I’m eating some shrubs…”
Therapod be all like “RAAAaaar! I’m-a-gunna eat you!”
Stegasaurus is all “Fuck you, bud!”
Therapod is like “Oww! Owwies! I’m gunna go hunt over there now…”
Another Trike fan; I remember watching the children’s movie based on, “The Enormous Egg.” Did You Know the actual Uncle Beazly they used for that film sat on the lawn at the Smithsonian in front of the “Elephant building” for years? My folks have pix of us standing next to him.
Another Ankylosaurus fan here. Rockin’ that armor and tail, not carin’ about anything.
These days, you can’t say Tyrannosaurus without someone being all blah-blah-feathers-blah and there is absolutely no way to slap feathers on that thing without it looking derpy as shit (exhibits A, B)so I’ve lost respect for the old boy.
