Pteranodon popped up in the two previous sequels, while Pachycephalosaurus and Ankylosaurus only appeared in one previous film each ( The Lost World and Jurassic Park III respectively).
Gallimimus is obviously best known from the stampede scene in the first film, but it seemed to take a break for Jurassic Park III. either this was a subtle allusion to the idea that InGen are reckless and don't know or care the first thing about dinosaurs, or the palaeontologist consultants were off to lunch while Spielberg shot this scene), while it made proper appearances in the two sequels. Stegosaurus too, via an offscreen mention in the first Jurassic Park (as one of the vials of DNA stolen by Nedry, mislabeled 'Steg asaurus' Parasaurolophus is also a veteran of the first three.
No surprise to see T.rex and Triceratops on there, as two of the most iconic dinosaurs which have appeared in all the films so far.
