Allosaurus vs Tyrannosaurus Rex
A detailed side-by-side comparison of Allosaurus and Tyrannosaurus Rex, covering size, diet, classification, geologic period, and discovery history.
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| الخاصية | Allosaurus | Tyrannosaurus Rex |
|---|---|---|
| الاسم العلمي | Allosaurus fragilis | Tyrannosaurus rex |
| التصنيف | Theropoda | Tyrannosauridae |
| الحقبة | Jurassic Late | Cretaceous Late |
| النظام الغذائي | Carnivore | Carnivore |
| الطول | 9.7 m | 12.3 m |
| Height | 3.5 m | 3.7 m |
| الوزن | 2.3 t | 8.4 t |
| سنة الاكتشاف | 1877 | 1905 |
| موقع الاكتشاف | Garden Park, Colorado, USA | Montana, USA |
| سُمي بواسطة | Othniel Charles Marsh | Henry Fairfield Osborn |
Size Comparison
roughly the length of a large SUV
about as long as 2 cars end-to-end
Weight Comparison
comparable to 2.3 small cars
about the weight of 1.4 elephants
Timeline Comparison
Diet Comparison
Allosaurus
CarnivoreAllosaurus was a meat-eating predator, hunting other animals for food.
Tyrannosaurus Rex
CarnivoreTyrannosaurus Rex was a meat-eating predator, hunting other animals for food.
Classification Comparison
Allosaurus
Tyrannosaurus Rex
الاختلافات الرئيسية
- Allosaurus (9.7 m, ~2,300 kg) was significantly smaller and lighter than T. rex (12.3 m, ~8,400 kg).
- Allosaurus lived 80 million years earlier in the Late Jurassic; T. rex was a Late Cretaceous predator.
- T. rex had a bone-crushing bite; Allosaurus had a weaker bite but likely used a hatchet-like strike with its upper jaw.
- Allosaurus had three-fingered hands with large claws; T. rex had vestigial two-fingered arms.
- Allosaurus was the apex predator of the Morrison Formation, hunting sauropods; T. rex dominated the Hell Creek ecosystem.
Did You Know?
Tyrannosaurus Rex weighed roughly 4x more than Allosaurus.
Both Allosaurus and Tyrannosaurus Rex were carnivores.
Allosaurus lived during the Jurassic Late while Tyrannosaurus Rex lived during the Cretaceous Late, separated by roughly 44 million years.
Allosaurus was discovered 28 years earlier, in 1877.
Allosaurus belonged to Theropoda while Tyrannosaurus Rex belonged to Tyrannosauridae.
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