I know that this discussion might be a little out of fact, or nearly impossible, but I came to the theory of my own of the apatosaurus species returning in JW2: Did the injured apatosaurus cared for by Owen and Claire survived? Yes, I know you watched the film, and I am going to be accurate here, but it's just a theory. When the 6 apatosaurs were attacked by the I-Rex, the white hybrid beat em' up good, killing 5 and nearly-fatally injuring the one I am talking about. But there is evidence for the lone apatosaurus to survive: there were no birds on her body, compared to the other five which was a meatfest for the carrion-eaters. She had injuries all over her body, and was losing much blood, but if I am wrong about the birds waiting for her to die, then here's this: she was an apatosaurus, and she could handle very much injuries, due to her large size and metabolism. I know it's crazy, but that's how sauropods are: giant peaceful creatures that are very hard to kill. Let's say this: just as she played a role in showing that the I-Rex was killing for sport, could she play a role in JW2, if she survives? Besides, she may have been resting for herself to recuperate (she appeared to be dead in the camera). I know that this may be 25% true, and for the larger part, to be just fan fiction , BUT if she somehow manages to survive her near fatal injuries (here comes the big question)... could she return in Jurassic World 2? Could she meet Owen and Claire once again, just like they did in JW? And above all, will she play another important role in the sequel? This is just a theory, but if the makers of the sequel decide to take a look at this article and add her in, I just wouldn't know what to say... Except to be happy for her living on to see the sunlight for the rest of her days. The End.
P.S.: She would have no problem defending herself from the metriacanthosaurs. And please, add in the sequel of Isabella(the apatosaurus in my article) having a fight with a pack of Metriacanthosaurus, It would delight the fans!