The brontosaurus was a giant dinosaur. Despite its huge body, the brontosaurus was an herbivore and had a small head and jaw set on a very long neck that was balanced by a long, thin tail.

For over a century, paleontologists thought the brontosaurus was actually just another apatosaurus, a similar dinosaur that had already been discovered. But in 2015, scientists took another look, and now the brontosaurus is back! The brontosaurus lived in North America in the Jurassic period. Its scientific name comes from Greek roots bronte and saurus, meaning "thunder lizard," which is more fun than apato plus saurus, which means “deceptive lizard.”

Definitions of brontosaurus
  1. noun
    huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
    synonyms: Apatosaurus excelsus, apatosaur, apatosaurus, brontosaur, thunder lizard
    see moresee less
    type of:
    sauropod, sauropod dinosaur
    very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal
Word Family