Home world: Prehistoric Earth
First appearance: Dinosaur Expedition Born Free Episode 1: "Go! Born Free"
Latest appearance: Dinosaur Expedition Born Free Episode 3: "Rescue Brontosaurus"
Height: TBA
Weight: TBA
Category: {{{Category}}}
Affiliation: None
Roar(s): {{{Roar(s)}}}

Brontosaurus (ブロントサウルス, Burontosaurusu?) is a famous genus of sauropod dinosaur from the Jurassic period of North America. It was originally a different genus from Apatosaurus, but the type species Brontosaurus excelsus was reclassified as a species of Apatosaurus called Apatosaurus excelsus, meaning Brontosaurus was considered scientifically invalid for over 110 years.

A mother and child Brontosaurus were one of the many poacher targets in Dinosaur Expedition Born Free.

Wikipedia has a more detailed and comprehensive article on Brontosaurus


  • Height: TBA (Dinosaur Expedition Born Free), TBA (real life)
  • Weight: TBA (Dinosaur Expedition Born Free), 15 tons (real life)
  • Origin: Prehistoric Earth


Dinosaur Expedition Born Free

When poachers decided that the animals of modern day where too boring, they went back in time to hunt real game. Dinosaurs! Amongst their many targets was a massive brontosaur. The gentle giant was too big to hide and too slow to not chase. However, with the help of the Born Free gang, the Brontosaur was able to escape all these poacher traps and raise a child who became friends with the two youngest Born Free members.


  • The stop motion puppet for the brontosaur would be a common sight in Ururu's underground palace in Dinosaur Great War Izenborg.
  • When the Great Dinosaur War broke out, the Brontosaurus wasn't given a suit. It would only gain a suit in the Dinosaur Trilogy series' ending, Koseidon.
Trivia not relevant for the series
  • Brontosaurus was considered a junior synonym of Apatosaurus until 2015, when an extensive study concluded that it was a valid genus of sauropod distinct from Apatosaurus.

Powers and Abilities

  • Tail: Like all sauropods, the Brontosaurus can use it's massive tail as a weapon.
  • Size: In the laws of nature, when you're big, you don't need special defenses. The brontosaurus is a perfect example of this.

Known Brontosaurus


Dinosaur Expedition Born Free


Dinosaur Expedition Born Free Kaiju
Giant Ammonite (pilot episode) | Brontosaurus | Allosaurus | Tyrannosaurus | Triceratops | Trachodon | Stegosaurus | Iguanodon | Pteranodons |Gorgosaurus | Stegoceras | Ankylosaurus | Polacanthus | Monoclonius | Brachiosaurus | Corythosaurus | Diplodocus | Ezomikasa Dragon