Apatosaurus vs Diplodocus
A detailed side-by-side comparison of Apatosaurus and Diplodocus, covering size, diet, classification, geologic period, and discovery history.
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| 属性 | Apatosaurus | Diplodocus |
|---|---|---|
| 学名 | Apatosaurus ajax | Diplodocus longus |
| 分類 | Sauropoda | Sauropoda |
| 時代 | Jurassic Late | Jurassic Late |
| 食性 | Herbivore | Herbivore |
| 全長 | 22.0 m | 25.0 m |
| Height | 4.5 m | 5.0 m |
| 体重 | 22.7 t | 14.0 t |
| 発見年 | 1877 | 1878 |
| 発見場所 | Morrison Formation, Colorado, USA | Canon City, Colorado, USA |
| 命名者 | Othniel Charles Marsh | Othniel Charles Marsh |
Size Comparison
about as long as 4 cars end-to-end
about as long as 5 cars end-to-end
Weight Comparison
about the weight of 3.8 elephants
about the weight of 2.3 elephants
Timeline Comparison
Apatosaurus and Diplodocus both lived during the Jurassic Late period and may have shared the same habitats.
Diet Comparison
Apatosaurus
HerbivoreApatosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Diplodocus
HerbivoreDiplodocus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.
Classification Comparison
Apatosaurus
Diplodocus
Both dinosaurs share a common ancestor within the Sauropoda clade.
主な相違点
- Apatosaurus (22 m, ~22,700 kg) was shorter but significantly heavier than Diplodocus (25 m, ~14,000 kg).
- Both lived in the Late Jurassic Morrison Formation and were likely contemporaries.
- Apatosaurus had a more robust, barrel-like body; Diplodocus had a more slender, elongated build.
- Apatosaurus was formerly (and incorrectly) synonymized with Brontosaurus — Brontosaurus is now considered a separate valid genus.
- Both had long, whip-like tails that may have been used for defense or acoustic signaling.
Did You Know?
Both Apatosaurus and Diplodocus were herbivores.
Both dinosaurs lived during the Jurassic Late period and may have coexisted.
Apatosaurus was discovered 1 years earlier, in 1877.
Both belong to the Sauropoda clade, making them relatively close relatives.
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