Argentinosaurus vs Nigersaurus

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

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Side-by-Side Comparison

Property	Argentinosaurus	Nigersaurus
Scientific Name	Argentinosaurus huinculensis	Nigersaurus taqueti
Classification	Sauropoda	Sauropoda
Period	Cretaceous Late	Cretaceous Early
Diet	Herbivore	Herbivore
Length	35.0 m	9.0 m
Height	12.0 m	2.0 m
Weight	70.0 t	4.0 t
Discovery Year	1993	1999
Discovery Location	Neuquen Province, Argentina	Elrhaz Formation, Niger
Named By	Jose Bonaparte & Rodolfo Coria	Paul Sereno et al.

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Size Comparison

Argentinosaurus 35.0 m

as long as 3 school buses

Nigersaurus 9.0 m

roughly the length of a large SUV

Weight Comparison

Argentinosaurus 70.0 t

heavier than 12 African elephants

Nigersaurus 4.0 t

comparable to 4.0 small cars

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Timeline Comparison

Argentinosaurus

100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya

Nigersaurus

145.0 Mya Cretaceous Early (Mesozoic) 100.5 Mya

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Diet Comparison

Argentinosaurus

Herbivore

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

Nigersaurus

Herbivore

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

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Classification Comparison

Argentinosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Nigersaurus

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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Argentinosaurus was about 3.9x longer than Nigersaurus.

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Argentinosaurus weighed roughly 18x more than Nigersaurus.

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Both Argentinosaurus and Nigersaurus were herbivores.

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Argentinosaurus lived during the Cretaceous Late while Nigersaurus lived during the Cretaceous Early, separated by roughly 79 million years.

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Argentinosaurus was discovered 6 years earlier, in 1993.

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

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Explore These Dinosaurs

Argentinosaurus

Argentinosaurus huinculensis

35.0m long, 12.0m tall, 70.0t · Cretaceous Late

Nigersaurus

Nigersaurus taqueti

9.0m long, 2.0m tall, 4.0t · Cretaceous Early

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