The first dinosaur Dr. Alan Grant sees in Jurassic Park’s famous field encounter is a Brachiosaurus.
After arriving on Isla Nublar, Alan Grant and Ellie Sattler are driven through the developing park. Grant notices movement in the trees and looks up to see a towering sauropod feeding on foliage. His stunned reaction introduces the dinosaurs as living animals rather than simply attractions or threats.
The scene is one of the film’s most famous moments because it emphasizes wonder before danger. The Brachiosaurus is shown as enormous, peaceful, and capable of moving through the island landscape. John Williams’s score reinforces the sense of discovery.
The animal was identified as Brachiosaurus in the film and related franchise material. Modern paleontology has revised some sauropod classifications, and the animal shown is sometimes discussed in connection with updated genus names. Those scientific changes do not alter the film’s canonical identification.