Ankylosaurus vs Apatosaurus
A detailed side-by-side comparison of Ankylosaurus and Apatosaurus, covering size, diet, classification, geologic period, and discovery history.
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| Property | Ankylosaurus | Apatosaurus |
|---|---|---|
| Scientific Name | Ankylosaurus magniventris | Apatosaurus ajax |
| Classification | Ankylosauria | Sauropoda |
| Period | Cretaceous Late | Jurassic Late |
| Diet | Herbivore | Herbivore |
| Length | 10.0 m | 22.0 m |
| Height | 1.7 m | 4.5 m |
| Weight | 6.0 t | 22.7 t |
| Discovery Year | 1908 | 1877 |
| Discovery Location | Hell Creek Formation, Montana, USA | Morrison Formation, Colorado, USA |
| Named By | Barnum Brown | Othniel Charles Marsh |
Size Comparison
about as long as 2 cars end-to-end
about as long as 4 cars end-to-end
Weight Comparison
about the weight of 1.0 elephants
about the weight of 3.8 elephants
Timeline Comparison
Diet Comparison
Ankylosaurus
HerbivoreAnkylosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Apatosaurus
HerbivoreApatosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Classification Comparison
Ankylosaurus
Apatosaurus
Did You Know?
Apatosaurus was about 2.2x longer than Ankylosaurus.
Apatosaurus weighed roughly 4x more than Ankylosaurus.
Both Ankylosaurus and Apatosaurus were herbivores.
Ankylosaurus lived during the Cretaceous Late while Apatosaurus lived during the Jurassic Late, separated by roughly 96 million years.
Apatosaurus was discovered 31 years earlier, in 1877.
Ankylosaurus belonged to Ankylosauria while Apatosaurus belonged to Sauropoda.
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