In episode 5, Nigel wants to bring back some of the arthropods/bugs of the Carboniferous Period where he meets #arthropleura, #meganeura, #pulmonoscorpius and a Crassigyrinus which he wrestles with. And Matilda almost kills Terrence in a fight, and she's turning out to be a sorta antagonist.
In the last episode Nigel travels to find the underrated croc, #deinosuchus. As he travels he finds #parasaurolophus and #albertosaurus. In the end he finally brings back the croc and the park in a satisfying way ends by a titanosaur breaking loose and breaks everything.