Matchup · Who would win
Spinosaurus vs Allosaurus
Allosaurus, the Jurassic hunter
Spinosaurus
Allosaurus
Quick answer
Spinosaurus was far bigger than Allosaurus, up to 15 m and about 7 t against roughly 9 m and 2 to 4 t. On size alone Spinosaurus wins comfortably. Allosaurus was an agile Jurassic predator, but it lived about 50 million years earlier, so the two never met.
Did they ever meet?
No. Allosaurus lived in the Late Jurassic, around 150 million years ago, roughly 50 million years before Spinosaurus appeared.
The verdict
Spinosaurus badly outsizes Allosaurus, nearly double the length and several times the weight. Allosaurus was a formidable and agile Jurassic hunter with a slashing bite, but the size gap is simply too large. On raw size Spinosaurus wins, though as ever it was built for fish, not fighting. They lived about 50 million years apart.
Who would win, Spinosaurus or Allosaurus?
Spinosaurus, on size. It was nearly twice as long and several times heavier than Allosaurus. Allosaurus was quicker and a capable hunter, but the size difference is decisive. They never met, living about 50 million years apart.
How much bigger was Spinosaurus than Allosaurus?
Spinosaurus reached about 15 m and roughly 7 tonnes, while Allosaurus was about 8.5 to 9.7 m and around 2 to 4 tonnes, so Spinosaurus was roughly twice as long and several times heavier.
Did Spinosaurus and Allosaurus ever meet?
No. Allosaurus lived in the Late Jurassic about 150 million years ago, some 50 million years before Spinosaurus, and on a different continent.
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