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

Свойство Allosaurus Ornithomimus
Научное название Allosaurus fragilis Ornithomimus edmontonicus
Классификация Theropoda Ornithomimosauria
Период Jurassic Late Cretaceous Late
Питание Carnivore Omnivore
Длина 9.7 m 3.8 m
Height 3.5 m 1.4 m
Вес 2.3 t 170 kg
Год открытия 1877 1890
Место открытия Garden Park, Colorado, USA Alberta, Canada
Назван 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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