The Brontosaurus, often called the "thunder lizard," was a giant herbivore that lived in North America during the Late Jurassic period. Renowned for its immense size, with the largest species stretching up to 22 meters and weighing around 15-17 tons, it featured a long, whip-like tail and a robust neck.

Initially discovered by Othniel Charles Marsh in 1879, the Brontosaurus underwent a notable taxonomic journey, where it was once considered synonymous with Apatosaurus but was later reinstated as a distinct genus. This sauropod was a part of the diverse ecosystem of the Morrison Formation, coexisting with various other dinosaur species.

The Brontosaurus has captivated the public imagination, often appearing in popular culture as a symbol of the prehistoric world's grandeur and mystery.