Jurassic Worlds "New" Dinosaurs

I have done some research and figured out something, on the Jurassic world website if you select the park attraction T-rex kingdom in the description it says this line "After all she's been feeding on Isla Nubla for over 25 years!" Although cool to think it's the same T-Rex as the first film, it makes me wonder, are all the dinosaurs at Jurassic World simply the old ones from the original park? Although some such as the Velociraptors ( Because the originals are dead.) and the Indomnius Rex, almost every other dinosaur was at the original park. Before you say the are new dinosaurs if you remember correctly Alan Grant and gang did not complete the tour. And their were embryos for every dinosaur on the list for the upcoming film, remember the part where Nedry was stealing the embryos? Well some had the "new"dinosaurs we hadn't seen and all of the unfaced dinosaurs are in the new movie. So did Simon Masrani just put all the old guys back in their pens and fill the blanks? Did the Masrani Corporation find the embryos that Nedry dropped in the first film? Well we will just have to wait and see.