Argentinosaurus vs Brachiosaurus

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

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Side-by-Side Comparison

Property	Argentinosaurus	Brachiosaurus
Scientific Name	Argentinosaurus huinculensis	Brachiosaurus altithorax
Classification	Sauropoda	Sauropoda
Period	Cretaceous Late	Jurassic Late
Diet	Herbivore	Herbivore
Length	35.0 m	26.0 m
Height	12.0 m	13.0 m
Weight	70.0 t	56.0 t
Discovery Year	1993	1903
Discovery Location	Neuquen Province, Argentina	Grand River Valley, Colorado, USA
Named By	Jose Bonaparte & Rodolfo Coria	Elmer S. Riggs

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Size Comparison

Argentinosaurus 35.0 m

as long as 3 school buses

Brachiosaurus 26.0 m

about as long as 5 cars end-to-end

Weight Comparison

Argentinosaurus 70.0 t

heavier than 12 African elephants

Brachiosaurus 56.0 t

heavier than 9 African elephants

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Timeline Comparison

Argentinosaurus

100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya

Brachiosaurus

161.5 Mya Jurassic Late (Mesozoic) 145.0 Mya

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Diet Comparison

Argentinosaurus

Herbivore

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

Brachiosaurus

Herbivore

Brachiosaurus 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)

Brachiosaurus

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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Both Argentinosaurus and Brachiosaurus were herbivores.

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Argentinosaurus lived during the Cretaceous Late while Brachiosaurus lived during the Jurassic Late, separated by roughly 96 million years.

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Brachiosaurus was discovered 90 years earlier, in 1903.

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

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Compare With Other Dinosaurs

Brachiosaurus vs Diplodocus

Herbivore vs Herbivore

Stegosaurus vs Brachiosaurus

Herbivore vs Herbivore

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Explore These Dinosaurs

Argentinosaurus

Argentinosaurus huinculensis

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

Brachiosaurus

Brachiosaurus altithorax

26.0m long, 13.0m tall, 56.0t · Jurassic Late

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