Allosaurus vs Ornithomimus
A detailed side-by-side comparison of Allosaurus and Ornithomimus, covering size, diet, classification, geologic period, and discovery history.
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| Property | Allosaurus | Ornithomimus |
|---|---|---|
| Scientific Name | Allosaurus fragilis | Ornithomimus edmontonicus |
| Classification | Theropoda | Ornithomimosauria |
| Period | Jurassic Late | Cretaceous Late |
| Diet | Carnivore | Omnivore |
| Length | 9.7 m | 3.8 m |
| Height | 3.5 m | 1.4 m |
| Weight | 2.3 t | 170 kg |
| Discovery Year | 1877 | 1890 |
| Discovery Location | Garden Park, Colorado, USA | Alberta, Canada |
| Named By | Othniel Charles Marsh | Othniel Charles Marsh |
Size Comparison
roughly the length of a large SUV
about the size of a human adult
Weight Comparison
comparable to 2.3 small cars
about 2 adult humans
Timeline Comparison
Diet Comparison
Allosaurus
CarnivoreAllosaurus was a meat-eating predator, hunting other animals for food.
Ornithomimus
OmnivoreOrnithomimus had an omnivorous diet, consuming both plants and small animals.
Classification Comparison
Allosaurus
Ornithomimus
Did You Know?
Allosaurus was about 2.6x longer than Ornithomimus.
Allosaurus weighed roughly 14x more than Ornithomimus.
Allosaurus was a carnivore while Ornithomimus was a omnivore.
Allosaurus lived during the Jurassic Late while Ornithomimus lived during the Cretaceous Late, separated by roughly 44 million years.
Allosaurus was discovered 13 years earlier, in 1877.
Allosaurus belonged to Theropoda while Ornithomimus belonged to Ornithomimosauria.
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