Coelophysis vs Irritator
A detailed side-by-side comparison of Coelophysis and Irritator, covering size, diet, classification, geologic period, and discovery history.
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| Property | Coelophysis | Irritator |
|---|---|---|
| Scientific Name | Coelophysis bauri | Irritator challengeri |
| Classification | Theropoda | Spinosauridae |
| Period | Triassic Late | Cretaceous Early |
| Diet | Carnivore | Piscivore |
| Length | 3.0 m | 8.0 m |
| Height | 1.0 m | 2.5 m |
| Weight | 20 kg | 1.0 t |
| Discovery Year | 1889 | 1996 |
| Discovery Location | Ghost Ranch, New Mexico, USA | Santana Formation, Brazil |
| Named By | Edward Drinker Cope | David Martill et al. |
Size Comparison
about the size of a human adult
roughly the length of a large SUV
Weight Comparison
lighter than a human adult
comparable to 1.0 small cars
Timeline Comparison
Diet Comparison
Coelophysis
CarnivoreCoelophysis was a meat-eating predator, hunting other animals for food.
Irritator
PiscivoreIrritator was a fish-eater, specialized in catching aquatic prey.
Classification Comparison
Coelophysis
Irritator
Did You Know?
Irritator was about 2.7x longer than Coelophysis.
Irritator weighed roughly 50x more than Coelophysis.
Coelophysis was a carnivore while Irritator was a piscivore.
Coelophysis lived during the Triassic Late while Irritator lived during the Cretaceous Early, separated by roughly 56 million years.
Coelophysis was discovered 107 years earlier, in 1889.
Coelophysis belonged to Theropoda while Irritator belonged to Spinosauridae.
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