Dilophosaurus vs Irritator
A detailed side-by-side comparison of Dilophosaurus and Irritator, covering size, diet, classification, geologic period, and discovery history.
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| Property | Dilophosaurus | Irritator |
|---|---|---|
| Scientific Name | Dilophosaurus wetherilli | Irritator challengeri |
| Classification | Theropoda | Spinosauridae |
| Period | Jurassic Early | Cretaceous Early |
| Diet | Carnivore | Piscivore |
| Length | 7.0 m | 8.0 m |
| Height | 2.0 m | 2.5 m |
| Weight | 400 kg | 1.0 t |
| Discovery Year | 1954 | 1996 |
| Discovery Location | Tuba City, Arizona, USA | Santana Formation, Brazil |
| Named By | Samuel P. Welles | David Martill et al. |
Size Comparison
roughly the length of a large SUV
roughly the length of a large SUV
Weight Comparison
about 6 adult humans
comparable to 1.0 small cars
Timeline Comparison
Diet Comparison
Dilophosaurus
CarnivoreDilophosaurus was a meat-eating predator, hunting other animals for food.
Irritator
PiscivoreIrritator was a fish-eater, specialized in catching aquatic prey.
Classification Comparison
Dilophosaurus
Irritator
Did You Know?
Irritator weighed roughly 2x more than Dilophosaurus.
Dilophosaurus was a carnivore while Irritator was a piscivore.
Dilophosaurus lived during the Jurassic Early while Irritator lived during the Cretaceous Early, separated by roughly 30 million years.
Dilophosaurus was discovered 42 years earlier, in 1954.
Dilophosaurus belonged to Theropoda while Irritator belonged to Spinosauridae.
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