Brachiosaurus is a genus of sauropod dinosaur that lived during the Late Jurassic period, around 150 million years ago. The name Brachiosaurus means “arm lizard”, referring to its long front legs which were longer than its hind legs. It was a large herbivorous dinosaur, measuring up to 85 feet in length and weighing up to 80 tons.

Brachiosaurus had a long neck and tail, and a small head compared to the rest of its body, allowing it to reach tall trees for food. It had four pillar-like legs and a small tail. Its teeth were spoon-shaped and flat, which were used to grind vegetation. Brachiosaurus was one of the largest land animals to ever exist, and it’s believed that it lived in herds and had a diet mostly of ferns, cycads, and other low-lying vegetation.

Due to its massive size, some scientists believe Brachiosaurus didn’t have any natural predators unless they were very young or very sick.