What dino is this?

That could be a Microceratus.

Could be, though, for a Microceratus, it's pretty big!

ankylosaurus maybe?

Possible too, but, shouldn't it have a second set of horns if it is?

Wild stab in the dark here, It might be a trike at an Odd poor rendered angle (Probably a younger one) OR a parasaurlophus. 

looks like a type of hadrosaur

I think thats an ankylosaurus or a parasaurlophus. There i alot pointing to ankylosaurus vs I-Rex fight, this (if it is), the trailer scene with ankys running everywhere, that photo released a couple weeks ago and the Target exlusive anky vs Irex set.

Hmmmm....

Oh, just rewatched, you see a baby Trike after, maybe thats its parent.