Were the Dinobots even named in the film? According to TFwiki, "Strafe is named so not because of trademark reasons, but because the film's two-headed design was considered too great a departure from previous Swoop characters." Really? They didn't think Ironhide or Jetfire or Wheelie or Leadfoot or Soundwave or Sentinel Prime or Topspin or Blackout or Demolishor or any other Bay-movie designs were too much of a departure, but a second head stopped Hasbro calling these toys Swoop? So instead they named them Strafe, who until now has never even been a pteranodon.
I'm pretty sure you could miss the first two hours and not miss any Dinobots. They're really just dei ex machina.