Argentinosaurus vs Tyrannosaurus Rex

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

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Side-by-Side Comparison

Property Argentinosaurus Tyrannosaurus Rex
Scientific Name Argentinosaurus huinculensis Tyrannosaurus rex
Classification Sauropoda Tyrannosauridae
Period Cretaceous Late Cretaceous Late
Diet Herbivore Carnivore
Length 35.0 m 12.3 m
Height 12.0 m 3.7 m
Weight 70.0 t 8.4 t
Discovery Year 1993 1905
Discovery Location Neuquen Province, Argentina Montana, USA
Named By Jose Bonaparte & Rodolfo Coria Henry Fairfield Osborn
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Size Comparison

Argentinosaurus 35.0 m

as long as 3 school buses

Tyrannosaurus Rex 12.3 m

about as long as 2 cars end-to-end

Weight Comparison

Argentinosaurus 70.0 t

heavier than 12 African elephants

Tyrannosaurus Rex 8.4 t

about the weight of 1.4 elephants

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Timeline Comparison

Argentinosaurus
100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya
Tyrannosaurus Rex
100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya

Argentinosaurus and Tyrannosaurus Rex both lived during the Cretaceous Late period and may have shared the same habitats.

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Diet Comparison

Argentinosaurus

Herbivore

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

Tyrannosaurus Rex

Carnivore

Tyrannosaurus Rex was a meat-eating predator, hunting other animals for food.

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Classification Comparison

Argentinosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Tyrannosaurus Rex

Clade: Theropoda

Group: Tyrannosauridae

(Tyrant lizards)

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Did You Know?

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Argentinosaurus was about 2.8x longer than Tyrannosaurus Rex.

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Argentinosaurus weighed roughly 8x more than Tyrannosaurus Rex.

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Argentinosaurus was a herbivore while Tyrannosaurus Rex was a carnivore.

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

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Tyrannosaurus Rex was discovered 88 years earlier, in 1905.

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Argentinosaurus belonged to Sauropoda while Tyrannosaurus Rex belonged to Tyrannosauridae.

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Compare With Other Dinosaurs

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Tyrannosaurus Rex vs Spinosaurus

Carnivore vs Piscivore

Tyrannosaurus Rex vs Triceratops

Carnivore vs Herbivore

Tyrannosaurus Rex vs Velociraptor

Carnivore vs Carnivore
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Explore These Dinosaurs

Argentinosaurus

Argentinosaurus huinculensis

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

Tyrannosaurus Rex

Tyrannosaurus rex

12.3m long, 3.7m tall, 8.4t · Cretaceous Late

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