Amargasaurus vs Diplodocus

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

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Side-by-Side Comparison

Property Amargasaurus Diplodocus
Scientific Name Amargasaurus cazaui Diplodocus longus
Classification Sauropoda Sauropoda
Period Cretaceous Early Jurassic Late
Diet Herbivore Herbivore
Length 10.0 m 25.0 m
Height 2.5 m 5.0 m
Weight 2.6 t 14.0 t
Discovery Year 1991 1878
Discovery Location La Amarga Formation, Argentina Canon City, Colorado, USA
Named By Leonardo Salgado & Jose Bonaparte Othniel Charles Marsh
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Size Comparison

Amargasaurus 10.0 m

about as long as 2 cars end-to-end

Diplodocus 25.0 m

about as long as 5 cars end-to-end

Weight Comparison

Amargasaurus 2.6 t

comparable to 2.6 small cars

Diplodocus 14.0 t

about the weight of 2.3 elephants

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Timeline Comparison

Amargasaurus
145.0 Mya Cretaceous Early (Mesozoic) 100.5 Mya
Diplodocus
161.5 Mya Jurassic Late (Mesozoic) 145.0 Mya
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Diet Comparison

Amargasaurus

Herbivore

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

Diplodocus

Herbivore

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

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Classification Comparison

Amargasaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Diplodocus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Both dinosaurs share a common ancestor within the Sauropoda clade.

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Did You Know?

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Diplodocus was about 2.5x longer than Amargasaurus.

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Diplodocus weighed roughly 5x more than Amargasaurus.

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Both Amargasaurus and Diplodocus were herbivores.

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Amargasaurus lived during the Cretaceous Early while Diplodocus lived during the Jurassic Late, separated by roughly 61 million years.

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Diplodocus was discovered 113 years earlier, in 1878.

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Both belong to the Sauropoda clade, making them relatively close relatives.

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Compare With Other Dinosaurs

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