Apatosaurus vs Stegosaurus

A detailed side-by-side comparison of Apatosaurus and Stegosaurus, covering size, diet, classification, geologic period, and discovery history.

Side-by-Side Comparison

คุณสมบัติ Apatosaurus Stegosaurus
ชื่อวิทยาศาสตร์ Apatosaurus ajax Stegosaurus stenops
การจำแนกประเภท Sauropoda Stegosauria
ยุคสมัย Jurassic Late Jurassic Late
อาหาร Herbivore Herbivore
ความยาว 22.0 m 9.0 m
Height 4.5 m 4.0 m
น้ำหนัก 22.7 t 5.0 t
ปีที่ค้นพบ 1877 1877
สถานที่ค้นพบ Morrison Formation, Colorado, USA Morrison, Colorado, USA
ตั้งชื่อโดย Othniel Charles Marsh Othniel Charles Marsh

Size Comparison

Apatosaurus 22.0 m

about as long as 4 cars end-to-end

Stegosaurus 9.0 m

roughly the length of a large SUV

Weight Comparison

Apatosaurus 22.7 t

about the weight of 3.8 elephants

Stegosaurus 5.0 t

about the weight of 0.8 elephants

Timeline Comparison

Apatosaurus
161.5 Mya Jurassic Late (Mesozoic) 145.0 Mya
Stegosaurus
161.5 Mya Jurassic Late (Mesozoic) 145.0 Mya

Apatosaurus and Stegosaurus both lived during the Jurassic Late period and may have shared the same habitats.

Diet Comparison

Apatosaurus

Herbivore

Apatosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.

Stegosaurus

Herbivore

Stegosaurus was a plant-eater, feeding on vegetation like ferns, conifers, and cycads.

Classification Comparison

Apatosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Stegosaurus

Clade: Thyreophora

Group: Stegosauria

(Plated dinosaurs)

Did You Know?

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Apatosaurus was about 2.4x longer than Stegosaurus.

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Apatosaurus weighed roughly 5x more than Stegosaurus.

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Both Apatosaurus and Stegosaurus were herbivores.

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Both dinosaurs lived during the Jurassic Late period and may have coexisted.

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Apatosaurus belonged to Sauropoda while Stegosaurus belonged to Stegosauria.

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