Spinosaurus vs Tyrannosaurus Rex

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

Side-by-Side Comparison

गुण Spinosaurus Tyrannosaurus Rex
वैज्ञानिक नाम Spinosaurus aegyptiacus Tyrannosaurus rex
वर्गीकरण Spinosauridae Tyrannosauridae
युग Cretaceous Early Cretaceous Late
आहार Piscivore Carnivore
लंबाई 15.0 m 12.3 m
Height 5.2 m 3.7 m
वजन 7.4 t 8.4 t
खोज वर्ष 1912 1905
खोज स्थान Bahariya Oasis, Egypt Montana, USA
नामकर्ता Ernst Stromer Henry Fairfield Osborn

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

Timeline Comparison

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

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.

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.

मुख्य अंतर

  • 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.

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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