Amargasaurus vs Sauropelta

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

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Side-by-Side Comparison

Property Amargasaurus Sauropelta
Scientific Name Amargasaurus cazaui Sauropelta edwardsorum
Classification Sauropoda Ankylosauria
Period Cretaceous Early Cretaceous Early
Diet Herbivore Herbivore
Length 10.0 m 5.2 m
Height 2.5 m 1.5 m
Weight 2.6 t 1.5 t
Discovery Year 1991 1970
Discovery Location La Amarga Formation, Argentina Cloverly Formation, Montana, USA
Named By Leonardo Salgado & Jose Bonaparte John Ostrom
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Size Comparison

Amargasaurus 10.0 m

about as long as 2 cars end-to-end

Sauropelta 5.2 m

roughly the length of a large SUV

Weight Comparison

Amargasaurus 2.6 t

comparable to 2.6 small cars

Sauropelta 1.5 t

comparable to 1.5 small cars

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Timeline Comparison

Amargasaurus
145.0 Mya Cretaceous Early (Mesozoic) 100.5 Mya
Sauropelta
145.0 Mya Cretaceous Early (Mesozoic) 100.5 Mya

Amargasaurus and Sauropelta both lived during the Cretaceous Early period and may have shared the same habitats.

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Diet Comparison

Amargasaurus

Herbivore

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

Sauropelta

Herbivore

Sauropelta 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)

Sauropelta

Clade: Thyreophora

Group: Ankylosauria

(Fused lizards)

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Did You Know?

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Amargasaurus was about 1.9x longer than Sauropelta.

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Both Amargasaurus and Sauropelta were herbivores.

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Both dinosaurs lived during the Cretaceous Early period and may have coexisted.

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Sauropelta was discovered 21 years earlier, in 1970.

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Amargasaurus belonged to Sauropoda while Sauropelta belonged to Ankylosauria.

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