Spinosaurus vs Tyrannosaurus Rex

A detailed side-by-side comparison of Spinosaurus and Tyrannosaurus Rex, covering size, diet, classification, geologic period, and discovery history.

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Side-by-Side Comparison

속성 Spinosaurus Tyrannosaurus Rex
학명 Spinosaurus aegyptiacus Tyrannosaurus rex
분류 Spinosauridae Tyrannosauridae
시대 Cretaceous Early Cretaceous Late
식성 Piscivore Carnivore
길이 15.0 m 12.3 m
Height 5.2 m 3.7 m
무게 7.4 t 8.4 t
발견 연도 1912 1905
발견 위치 Bahariya Oasis, Egypt Montana, USA
명명자 Ernst Stromer Henry Fairfield Osborn
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Size Comparison

Spinosaurus 15.0 m

about as long as 3 cars end-to-end

Tyrannosaurus Rex 12.3 m

about as long as 2 cars end-to-end

Weight Comparison

Spinosaurus 7.4 t

about the weight of 1.2 elephants

Tyrannosaurus Rex 8.4 t

about the weight of 1.4 elephants

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Timeline Comparison

Spinosaurus
145.0 Mya Cretaceous Early (Mesozoic) 100.5 Mya
Tyrannosaurus Rex
100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya
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Diet Comparison

Spinosaurus

Piscivore

Spinosaurus was a fish-eater, specialized in catching aquatic prey.

Tyrannosaurus Rex

Carnivore

Tyrannosaurus Rex was a meat-eating predator, hunting other animals for food.

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Classification Comparison

Spinosaurus

Clade: Theropoda

Group: Spinosauridae

(Spine lizards)

Tyrannosaurus Rex

Clade: Theropoda

Group: Tyrannosauridae

(Tyrant lizards)

Both dinosaurs share a common ancestor within the Theropoda clade.

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주요 차이점

  • Spinosaurus (up to 15 m) was longer than T. rex (up to 12.3 m), making it the largest known predatory dinosaur.
  • T. rex had the most powerful bite force of any land animal (~57,000 N); Spinosaurus had a weaker but longer, crocodile-like jaw suited for catching fish.
  • Spinosaurus was semi-aquatic with dense bones for buoyancy, while T. rex was a terrestrial apex predator.
  • T. rex lived in western North America during the Late Cretaceous; Spinosaurus roamed North Africa in the Early Cretaceous.
  • Spinosaurus had a prominent sail or hump on its back up to 1.8 m tall; T. rex had no such structure.
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Did You Know?

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Spinosaurus was a piscivore while Tyrannosaurus Rex was a carnivore.

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Spinosaurus lived during the Cretaceous Early while Tyrannosaurus Rex lived during the Cretaceous Late, separated by roughly 0 million years.

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Tyrannosaurus Rex was discovered 7 years earlier, in 1905.

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Spinosaurus belonged to Spinosauridae while Tyrannosaurus Rex belonged to Tyrannosauridae.

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