Brontosaurus (Earth-7045)

Brontosaurus is a genus of gigantic quadruped sauropod dinosaurs. Although the type species, B. excelsus, had long been considered a species of the closely related Apatosaurus, researchers proposed in 2015 that Brontosaurus is a genus separate from Apatosaurus and that it contains three species: B. excelsus, B. yahnahpin, and B. parvus.

Brontosaurus had a long, thin neck and a small head adapted for a herbivorous lifestyle; a bulky, heavy torso; and a long, whip-like tail. The various species lived during the Late Jurassic epoch in the Morrison Formation of what is now North America, and were extinct by the end of the Jurassic. Adult individuals of Brontosaurus are estimated to have weighed up to 15 tonnes (15 long tons; 17 short tons) and measured up to 22 metres (72 ft) long.

History
The Brontosaurus were among the multiple dinosaur species domesticated by the Nuwali when they arrived on Earth, with some specimens frozen in suspended animation. Otherwise the history of the species prior to the Cenozoic Era is the same as its real world counterpart.

When the K-T Extinction Event was on the horizon, the Nuwali themselves went into cryogenic suspension in order to stave off the meteor collision. They eventually reawakened, along with the dinosaur specimens kept on ice - including Brontosaurus, during the Eocene epoch. The Nuwali relocated to the recently-formed continent of Antarctica, where they would terraform a section of the landmass in an artificial nature preserve that would be known in the present as the Savage Land. The Mesozoic animals were sustained as their individual species thanks to the Nuwali's genetic engineering technology. Cenozoic wildlife would also be introduced to this new ecosystem.

However, some time before 3,000,000 B.C., the Nuwali would leave Earth for reasons unknown. This forced the wildlife to fend for itself, causing evolution to finally resume its course and the more ancient animals like Brontosaurus to go extinct, their legacy continuing with their descendants.

Known Species

 * Brontosaurus excelsius
 * Brontosaurus parsus
 * Brontosaurus yahnahpin

Habitat
Habitat: Earth

Gravity: 9.80665 m/s

Atmosphere: 78% nitrogen, 21% oxygen, 0.93% argon, 0.04% carbon dioxide, remaining percentage other gases

Trivia

 * Brontosaurus would be taken as an alternate mode by the Autobot Dinobot Sludge. Meanwhile, Rairyu would base his Pretender shell on the species.