Deinonychus vs Psittacosaurus
A detailed side-by-side comparison of Deinonychus and Psittacosaurus, covering size, diet, classification, geologic period, and discovery history.
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| Property | Deinonychus | Psittacosaurus |
|---|---|---|
| Scientific Name | Deinonychus antirrhopus | Psittacosaurus mongoliensis |
| Classification | Dromaeosauridae | Ceratopsia |
| Period | Cretaceous Early | Cretaceous Early |
| Diet | Carnivore | Herbivore |
| Length | 3.4 m | 2.0 m |
| Height | 0.9 m | 0.6 m |
| Weight | 73 kg | 20 kg |
| Discovery Year | 1969 | 1923 |
| Discovery Location | Montana, USA | Mongolia |
| Named By | John Ostrom | Henry Fairfield Osborn |
Size Comparison
about the size of a human adult
about the size of a human adult
Weight Comparison
about 1 adult humans
lighter than a human adult
Timeline Comparison
Deinonychus and Psittacosaurus both lived during the Cretaceous Early period and may have shared the same habitats.
Diet Comparison
Deinonychus
CarnivoreDeinonychus was a meat-eating predator, hunting other animals for food.
Psittacosaurus
HerbivorePsittacosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Classification Comparison
Deinonychus
Psittacosaurus
Did You Know?
Deinonychus was about 1.7x longer than Psittacosaurus.
Deinonychus weighed roughly 4x more than Psittacosaurus.
Deinonychus was a carnivore while Psittacosaurus was a herbivore.
Both dinosaurs lived during the Cretaceous Early period and may have coexisted.
Psittacosaurus was discovered 46 years earlier, in 1923.
Deinonychus belonged to Dromaeosauridae while Psittacosaurus belonged to Ceratopsia.
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