<Li> Jump up ^ In the films, the dinosaurs portrayed as Dilophosaurus are much smaller than in real life, have a fleshy frill around their neck and are venomous . The novel's Dilophosaurus are correctly sized and lack the frill . </Li> <Li> Jump up ^ The dinosaurs portrayed in the novels and films as "Velociraptor", are almost identical to the real life Deinonychus . It is speculated that this incorrect portrayal came about because of mislabelling of Deinonychus as a subspecies of Velociraptor in the 1988 American book, Predatory Dinosaurs of the World, whose author, Gregory Paul, is credited as an inspiration by Crichton at the end of his first novel . </Li> <Li> Jump up ^ In the first novel, Apatosaurus is the very first group of dinosaurs seen on the island . It is replaced by Brachiosaurus in the first film and by Mamenchisaurus in the second . </Li> <Li> Jump up ^ In the first novel, a herd of Hadrosaurus stampeded when attacked by the Tyrannosaurus . </Li>

What was the first dinosaur they saw in jurassic park
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