Originally “Brontosaurus” the “deceptive reptile” was discovered and described in 1879 in Colorado by Othniel Charles Marsh. Apatosaurus lived during the Late Jurassic Period about 156 to 151 million years ago. It was 26 meters (about 85.3ft) in length, 5 meters (16ft) in height at the hips and 25 tons in weight. There are 3 more species of Apatosaurus, A. louisae, A. ajax and A.parvus. Apatosaurus belonged to the Diplodocidae family, and the infraorder sauropoda. This dinosaur is the second most common sauropod in the Morrison Formation. Early on in history,
Diplodocids were characterized with their necks high in the air. We now know that their necks were parallel with the ground and their tails counter balancing them. The first thing you will notice is the cervical vertebrae of Apatosaurus. They are heavily forked and have tall vertebral spines, unlike those of other Diplodocids. This may be due to large muscles in the neck. Apatosaurus also has much more stockier legs, and overall, a much more robust animal than other Diplodocids. Apatosaurus lived alongside animals like Allosaurus, Ceratosaurus, and Camarasaurus. It supported one large claw on both forelimbs.
Apatosaurus is confirmed to be on Isla Sorna due to The Lost World Official Souvenir Magazine identifying the several skeletons spotted just outside of the Worker Village as belonging to an “Apatosaur”.
“Everywhere, the land is is dotted with dinosaur skeletons. Some are huge apatosaurs, while others are smaller herbivores of many different species.” (The Lost World Souvenir Magazine, 42).
These bones featured around the Worker Village are also used in the Universal Studios Hollywood backlot tour, which uses several leftover props from the first three films including InGen Harvest vehicles, a Fleetwood RV, and the InGen barge that transports Dr. Alan Grant and the Kirby family downstream on Isla Sorna, and pieces from the Pteranodon Aviary. The bones used in the tour were the same bones that Dr. Ian Malcolm, his daughter Kelly, and Dr. Sarah Harding pass when they enter the Village. These bones can also be seen in the TV series, “Sliders”, where the Worker Village set is used in several episodes. These bones anatomically match the caudal vertebrae and ischium and ilium of Apatosaurus.
Further evidence stems from a dinosaur fetus prop from “Jurassic Park ///” that appears to bear a resemblance to a undeveloped, baby Apatosaurus as the neck would grow longer later in life; however, some say this prop looks like a Hadrosaurus and this causing issue over whether or not this graceful animal is present in the scene.
Apatosaurus is one of the dinosaur species housed in the Jurassic World theme park on Isla Nublar. Apatosaurus was available for guests to view during the Gyrosphere and the Cretaceous Cruise attraction. In the Gyrosphere attraction, the sauropods roamed freely through a grassy plain. In the Cretaceous Cruise attraction, it shared its containment area near the river with Stegosaurus. The in-universe Jurassic World site lists its threat level ranking as low. The Jurassic World size chart also details the proportions of the animals as 75ft long, and 15ft tall. Several Apatosaurus were attacked by the recently escaped Indominus rex, their bodies torn and bloodied, but not eaten, instead left to die in a field, where they were found by Claire Dearing and Owen Grady, who comforted one of the animals in its dying moments, before noticing the others. At this point, Owen realized that the Indominus was killing for sport, making the danger all the greater.