Argentinosaurus vs Pachycephalosaurus

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

Side-by-Side Comparison

गुण Argentinosaurus Pachycephalosaurus
वैज्ञानिक नाम Argentinosaurus huinculensis Pachycephalosaurus wyomingensis
वर्गीकरण Sauropoda Pachycephalosauria
युग Cretaceous Late Cretaceous Late
आहार Herbivore Herbivore
लंबाई 35.0 m 4.5 m
Height 12.0 m 1.8 m
वजन 70.0 t 450 kg
खोज वर्ष 1993 1943
खोज स्थान Neuquen Province, Argentina Montana, USA
नामकर्ता Jose Bonaparte & Rodolfo Coria Barnum Brown & Erich Schlaikjer

Size Comparison

Argentinosaurus 35.0 m

as long as 3 school buses

Pachycephalosaurus 4.5 m

roughly the length of a large SUV

Weight Comparison

Argentinosaurus 70.0 t

heavier than 12 African elephants

Pachycephalosaurus 450 kg

about 6 adult humans

Timeline Comparison

Argentinosaurus
100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya
Pachycephalosaurus
100.5 Mya Cretaceous Late (Mesozoic) 66.0 Mya

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

Diet Comparison

Argentinosaurus

Herbivore

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

Pachycephalosaurus

Herbivore

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

Classification Comparison

Argentinosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Pachycephalosaurus

Clade: Ornithischia

Group: Pachycephalosauria

(Thick-headed lizards)

Did You Know?

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Argentinosaurus was about 7.8x longer than Pachycephalosaurus.

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Argentinosaurus weighed roughly 156x more than Pachycephalosaurus.

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Both Argentinosaurus and Pachycephalosaurus were herbivores.

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

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Pachycephalosaurus was discovered 50 years earlier, in 1943.

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Argentinosaurus belonged to Sauropoda while Pachycephalosaurus belonged to Pachycephalosauria.

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