Allosaurus vs Corythosaurus

A detailed side-by-side comparison of Allosaurus and Corythosaurus, covering size, diet, classification, geologic period, and discovery history.

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Side-by-Side Comparison

Property	Allosaurus	Corythosaurus
Scientific Name	Allosaurus fragilis	Corythosaurus casuarius
Classification	Theropoda	Hadrosauridae
Period	Jurassic Late	Cretaceous Late
Diet	Carnivore	Herbivore
Length	9.7 m	9.0 m
Height	3.5 m	2.7 m
Weight	2.3 t	3.8 t
Discovery Year	1877	1914
Discovery Location	Garden Park, Colorado, USA	Red Deer River, Alberta, Canada
Named By	Othniel Charles Marsh	Barnum Brown

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Size Comparison

Allosaurus 9.7 m

roughly the length of a large SUV

Corythosaurus 9.0 m

roughly the length of a large SUV

Weight Comparison

Allosaurus 2.3 t

comparable to 2.3 small cars

Corythosaurus 3.8 t

comparable to 3.8 small cars

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Timeline Comparison

Allosaurus

161.5 Mya Jurassic Late (Mesozoic) 145.0 Mya

Corythosaurus

100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya

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Diet Comparison

Allosaurus

Carnivore

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

Corythosaurus

Herbivore

Corythosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.

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Classification Comparison

Allosaurus

Clade: Saurischia

Group: Theropoda

(Beast feet)

Corythosaurus

Clade: Ornithischia

Group: Hadrosauridae

(Duck-billed dinosaurs)

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Did You Know?

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Allosaurus was a carnivore while Corythosaurus was a herbivore.

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Allosaurus lived during the Jurassic Late while Corythosaurus lived during the Cretaceous Late, separated by roughly 44 million years.

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Allosaurus was discovered 37 years earlier, in 1877.

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Allosaurus belonged to Theropoda while Corythosaurus belonged to Hadrosauridae.

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Compare With Other Dinosaurs

Allosaurus vs Stegosaurus

Carnivore vs Herbivore

Parasaurolophus vs Corythosaurus

Herbivore vs Herbivore

Tyrannosaurus Rex vs Allosaurus

Carnivore vs Carnivore

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Explore These Dinosaurs

Allosaurus

Allosaurus fragilis

9.7m long, 3.5m tall, 2.3t · Jurassic Late

Corythosaurus

Corythosaurus casuarius

9.0m long, 2.7m tall, 3.8t · Cretaceous Late

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