Apatosaurus vs Iguanodon

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

Side-by-Side Comparison

Properti Apatosaurus Iguanodon
Nama Ilmiah Apatosaurus ajax Iguanodon bernissartensis
Klasifikasi Sauropoda Ornithischia
Periode Jurassic Late Cretaceous Early
Diet Herbivore Herbivore
Panjang 22.0 m 10.0 m
Height 4.5 m 3.0 m
Berat 22.7 t 3.4 t
Tahun Penemuan 1877 1825
Lokasi Penemuan Morrison Formation, Colorado, USA Sussex, England
Dinamai Oleh Othniel Charles Marsh Gideon Mantell

Size Comparison

Apatosaurus 22.0 m

about as long as 4 cars end-to-end

Iguanodon 10.0 m

about as long as 2 cars end-to-end

Weight Comparison

Apatosaurus 22.7 t

about the weight of 3.8 elephants

Iguanodon 3.4 t

comparable to 3.4 small cars

Timeline Comparison

Apatosaurus
161,5 Mya Jurassic Late (Mesozoic) 145,0 Mya
Iguanodon
145,0 Mya Cretaceous Early (Mesozoic) 100,5 Mya

Diet Comparison

Apatosaurus

Herbivore

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

Iguanodon

Herbivore

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

Classification Comparison

Apatosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Iguanodon

Group: Ornithischia

(Bird-hipped dinosaurs)

Did You Know?

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Apatosaurus was about 2.2x longer than Iguanodon.

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Apatosaurus weighed roughly 7x more than Iguanodon.

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Both Apatosaurus and Iguanodon were herbivores.

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Apatosaurus lived during the Jurassic Late while Iguanodon lived during the Cretaceous Early, separated by roughly 0 million years.

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Iguanodon was discovered 52 years earlier, in 1825.

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Apatosaurus belonged to Sauropoda while Iguanodon belonged to Ornithischia.

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