How big was a Spinosaurus?
Spinosaurus was about 46 ft14 m1 long, scientists' estimate. A long-snouted, fish-eating dinosaur with a tall sail on its back.
Spinosaurus next to you
Next to a child about four feet tall: Spinosaurus is about 12 of you long, lying head to toe.
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Where the numbers come from
- Wikidata, from the Natural History Museum's Dino Directory, checked 30 October 2026.