Robert T. Bakker
On "Ebert and Roeper", Richard Roeper gave it a Thumbs Down while Roger Ebert awarded a Thumbs Up. In a subsequent review, Ebert called it "the best blockbuster of the Summer". In his review, Ebert gave the film three stars and said it "is not as awe-inspiring as the first film or as elaborate as the second, but in its own B-movie way it's a nice little thrill machine". He also wrote, "I can't praise it for its art, but I must not neglect its craft, and on that basis I recommend it". Paleontologist Robert T. Bakker, an early pioneer of the dinosaur-bird connection, said the feather quills added to the "Velociraptor" for "Jurassic Park III" "looked like a roadrunner's toupee", but conceded that feathers are difficult subjects for computer animation and speculated that "Jurassic Park IV"'s raptors would have more realistic plumage. Spielberg, according to his spokesman, was "very happy" with Johnston's work on the film. In 2002, Crichton said he had not watched the film. Some fans of the series were upset with the decision to kill off the "T. rex" and replace it with a new dinosaur.