Allosaurus vs Apatosaurus
A detailed side-by-side comparison of Allosaurus and Apatosaurus, covering size, diet, classification, geologic period, and discovery history.
Side-by-Side Comparison
| Property | Allosaurus | Apatosaurus |
|---|---|---|
| Scientific Name | Allosaurus fragilis | Apatosaurus ajax |
| Classification | Theropoda | Sauropoda |
| Period | Jurassic Late | Jurassic Late |
| Diet | Carnivore | Herbivore |
| Length | 9.7 m | 22.0 m |
| Height | 3.5 m | 4.5 m |
| Weight | 2.3 t | 22.7 t |
| Discovery Year | 1877 | 1877 |
| Discovery Location | Garden Park, Colorado, USA | Morrison Formation, Colorado, USA |
| Named By | Othniel Charles Marsh | Othniel Charles Marsh |
Size Comparison
roughly the length of a large SUV
about as long as 4 cars end-to-end
Weight Comparison
comparable to 2.3 small cars
about the weight of 3.8 elephants
Timeline Comparison
Allosaurus and Apatosaurus both lived during the Jurassic Late period and may have shared the same habitats.
Diet Comparison
Allosaurus
CarnivoreAllosaurus was a meat-eating predator, hunting other animals for food.
Apatosaurus
HerbivoreApatosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Classification Comparison
Allosaurus
Apatosaurus
Did You Know?
Apatosaurus was about 2.3x longer than Allosaurus.
Apatosaurus weighed roughly 10x more than Allosaurus.
Allosaurus was a carnivore while Apatosaurus was a herbivore.
Both dinosaurs lived during the Jurassic Late period and may have coexisted.
Allosaurus belonged to Theropoda while Apatosaurus belonged to Sauropoda.