Brachiosaurus vs Psittacosaurus

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

Side-by-Side Comparison

Özellik Brachiosaurus Psittacosaurus
Bilimsel Ad Brachiosaurus altithorax Psittacosaurus mongoliensis
Sınıflandırma Sauropoda Ceratopsia
Dönem Jurassic Late Cretaceous Early
Diyet Herbivore Herbivore
Uzunluk 26.0 m 2.0 m
Height 13.0 m 0.6 m
Ağırlık 56.0 t 20 kg
Keşif Yılı 1903 1923
Keşif Yeri Grand River Valley, Colorado, USA Mongolia
Adlandıran Elmer S. Riggs Henry Fairfield Osborn

Size Comparison

Brachiosaurus 26.0 m

about as long as 5 cars end-to-end

Psittacosaurus 2.0 m

about the size of a human adult

Weight Comparison

Brachiosaurus 56.0 t

heavier than 9 African elephants

Psittacosaurus 20 kg

lighter than a human adult

Timeline Comparison

Brachiosaurus
161,5 Mya Jurassic Late (Mesozoic) 145,0 Mya
Psittacosaurus
145,0 Mya Cretaceous Early (Mesozoic) 100,5 Mya

Diet Comparison

Brachiosaurus

Herbivore

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

Psittacosaurus

Herbivore

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

Classification Comparison

Brachiosaurus

Clade: Sauropodomorpha

Group: Sauropoda

(Lizard feet)

Psittacosaurus

Clade: Ornithischia

Group: Ceratopsia

(Horned faces)

Did You Know?

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Brachiosaurus was about 13.0x longer than Psittacosaurus.

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Brachiosaurus weighed roughly 2800x more than Psittacosaurus.

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Both Brachiosaurus and Psittacosaurus were herbivores.

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Brachiosaurus lived during the Jurassic Late while Psittacosaurus lived during the Cretaceous Early, separated by roughly 0 million years.

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Brachiosaurus was discovered 20 years earlier, in 1903.

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Brachiosaurus belonged to Sauropoda while Psittacosaurus belonged to Ceratopsia.

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