Agathaumas (seen in battle with Allosaurus and Tyrannosaurus and is based on a hypothetical restoration by Charles R. Knight,)
Allosaurus (main carnivorous dinosaur seen, attacking Trachodon and Triceratops among others)
Apeman (menaces the team of explorers)
Brachiosaurus (seen during the volcanic eruption, one of which was attacked by a Tyrannosaurus)
Brontosaurus (The main antagonist.
After falling into a bog at the conclusion of a fight with an Allosaurus, one is captured and taken to civilization, where it escapes and terrorizes the city)
Edmontosaurus (is preyed upon by the Allosaurus and also called by synonym Trachodon or Anatosaurus)
Pteranodon (the first prehistoric animal seen by the team of explorers)
Stegosaurus (one disturbs the Agathaumas before the fight with the Allosaurus and Tyrannosaurus.
It escaped the volcano eruption
Triceratops (shown to be capable of handling an Allosaurus in battle)
Tyrannosaurus (is seen to have little trouble bringing down Agathaumas, as well as having a taste for a Pteranodon that swoops in too close.
One fights with a Brachiosaurus in the eruption scene.
Like the film Fantasia, it is shown with three fingers.)
Agathaumas (seen in battle with Allosaurus and Tyrannosaurus and is based on a hypothetical restoration by Charles R. Knight,)
Allosaurus (main carnivorous dinosaur seen, attacking Trachodon and Triceratops among others)
Apeman (menaces the team of explorers)
Brachiosaurus (seen during the volcanic eruption, one of which was attacked by a Tyrannosaurus)
Brontosaurus (The main antagonist. After falling into a bog at the conclusion of a fight with an Allosaurus, one is captured and taken to civilization, where it escapes and terrorizes the city)
Edmontosaurus (is preyed upon by the Allosaurus and also called by synonym Trachodon or Anatosaurus)
Pteranodon (the first prehistoric animal seen by the team of explorers)
Stegosaurus (one disturbs the Agathaumas before the fight with the Allosaurus and Tyrannosaurus. It escaped the volcano eruption
Triceratops (shown to be capable of handling an Allosaurus in battle)
Tyrannosaurus (is seen to have little trouble bringing down Agathaumas, as well as having a taste for a Pteranodon that swoops in too close. One fights with a Brachiosaurus in the eruption scene. Like the film Fantasia, it is shown with three fingers.)
The Lost World (1925 film)