Anchiornis vs Irritator
A detailed side-by-side comparison of Anchiornis and Irritator, covering size, diet, classification, geologic period, and discovery history.
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| Property | Anchiornis | Irritator |
|---|---|---|
| Scientific Name | Anchiornis huxleyi | Irritator challengeri |
| Classification | Theropoda | Spinosauridae |
| Period | Jurassic Late | Cretaceous Early |
| Diet | Insectivore | Piscivore |
| Length | 0.4 m | 8.0 m |
| Height | 0.2 m | 2.5 m |
| Weight | 0 kg | 1.0 t |
| Discovery Year | 2009 | 1996 |
| Discovery Location | Tiaojishan Formation, China | Santana Formation, Brazil |
| Named By | Xu Xing et al. | David Martill et al. |
Size Comparison
smaller than a human child
roughly the length of a large SUV
Weight Comparison
lighter than a human adult
comparable to 1.0 small cars
Timeline Comparison
Diet Comparison
Anchiornis
InsectivoreAnchiornis primarily fed on insects and other small invertebrates.
Irritator
PiscivoreIrritator was a fish-eater, specialized in catching aquatic prey.
Classification Comparison
Anchiornis
Irritator
Did You Know?
Irritator was about 20.0x longer than Anchiornis.
Irritator weighed roughly 10000x more than Anchiornis.
Anchiornis was a insectivore while Irritator was a piscivore.
Anchiornis lived during the Jurassic Late while Irritator lived during the Cretaceous Early, separated by roughly 0 million years.
Irritator was discovered 13 years earlier, in 1996.
Anchiornis belonged to Theropoda while Irritator belonged to Spinosauridae.
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