Allosaurus vs Ornithomimus

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

Side-by-Side Comparison

Thuộc tính Allosaurus Ornithomimus
Tên khoa học Allosaurus fragilis Ornithomimus edmontonicus
Phân loại Theropoda Ornithomimosauria
Kỷ Jurassic Late Cretaceous Late
Chế độ ăn Carnivore Omnivore
Chiều dài 9.7 m 3.8 m
Height 3.5 m 1.4 m
Cân nặng 2.3 t 170 kg
Năm khám phá 1877 1890
Địa điểm khám phá Garden Park, Colorado, USA Alberta, Canada
Được đặt tên bởi Othniel Charles Marsh Othniel Charles Marsh

Size Comparison

Allosaurus 9.7 m

roughly the length of a large SUV

Ornithomimus 3.8 m

about the size of a human adult

Weight Comparison

Allosaurus 2.3 t

comparable to 2.3 small cars

Ornithomimus 170 kg

about 2 adult humans

Timeline Comparison

Allosaurus
161,5 Mya Jurassic Late (Mesozoic) 145,0 Mya
Ornithomimus
100,5 Mya Cretaceous Late (Mesozoic) 66,0 Mya

Diet Comparison

Allosaurus

Carnivore

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

Ornithomimus

Omnivore

Ornithomimus had an omnivorous diet, consuming both plants and small animals.

Classification Comparison

Allosaurus

Clade: Saurischia

Group: Theropoda

(Beast feet)

Ornithomimus

Clade: Theropoda

Group: Ornithomimosauria

(Bird-mimic dinosaurs)

Did You Know?

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Allosaurus was about 2.6x longer than Ornithomimus.

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Allosaurus weighed roughly 14x more than Ornithomimus.

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Allosaurus was a carnivore while Ornithomimus was a omnivore.

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

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Allosaurus was discovered 13 years earlier, in 1877.

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Allosaurus belonged to Theropoda while Ornithomimus belonged to Ornithomimosauria.

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