After the destruction of Jurassic Park the many dinosaur species escaped and where free including the spinosaurus

After the incident people started coming back for the valuable assets.

Then the forest set ablaze then the dinosaurs had trouble finding meat because a lot of creatures had died from the fire SO THEY HAD TO EAT LEAVES. each other herbivores were fine eating the leaves and plans they didn't like.

the elasmosaurus decided to lay eggs and it ended up out of its home.It escaped into the ocean near the bermuda tringale

There were three boys and who sent a distress signal and the evac didn't work out and the signal exploded in front of them and caught the forest on fire.Out of of the wood they saw a Triceratops come out of the woods with its baby and the kids got them to safety and took them to the lab for healing because they had 4th degree burns.Then they noticed the scoriupis rexes containment chamber was broken.they knew they couldn't leave the lab with that free on the island. 

the spinosaurus saw the evac signal and started running towards it destroying everything in its path.The kids started running from it and they went to the visitor center for saftey. Nobody was their was also no visitor center there was only dinosaurs.