Irritator vs Spinosaurus

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

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Side-by-Side Comparison

Eigenschaft Irritator Spinosaurus
Wissenschaftlicher Name Irritator challengeri Spinosaurus aegyptiacus
Klassifikation Spinosauridae Spinosauridae
Zeitraum Cretaceous Early Cretaceous Early
Ernährung Piscivore Piscivore
Länge 8.0 m 15.0 m
Height 2.5 m 5.2 m
Gewicht 1.0 t 7.4 t
Entdeckungsjahr 1996 1912
Fundort Santana Formation, Brazil Bahariya Oasis, Egypt
Benannt von David Martill et al. Ernst Stromer
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Size Comparison

Irritator 8.0 m

roughly the length of a large SUV

Spinosaurus 15.0 m

about as long as 3 cars end-to-end

Weight Comparison

Irritator 1.0 t

comparable to 1.0 small cars

Spinosaurus 7.4 t

about the weight of 1.2 elephants

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Timeline Comparison

Irritator
145,0 Mya Cretaceous Early (Mesozoic) 100,5 Mya
Spinosaurus
145,0 Mya Cretaceous Early (Mesozoic) 100,5 Mya

Irritator and Spinosaurus both lived during the Cretaceous Early period and may have shared the same habitats.

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Diet Comparison

Irritator

Piscivore

Irritator was a fish-eater, specialized in catching aquatic prey.

Spinosaurus

Piscivore

Spinosaurus was a fish-eater, specialized in catching aquatic prey.

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Classification Comparison

Irritator

Clade: Theropoda

Group: Spinosauridae

(Spine lizards)

Spinosaurus

Clade: Theropoda

Group: Spinosauridae

(Spine lizards)

Both dinosaurs share a common ancestor within the Spinosauridae clade.

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Did You Know?

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Spinosaurus was about 1.9x longer than Irritator.

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Spinosaurus weighed roughly 7x more than Irritator.

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Both Irritator and Spinosaurus were piscivores.

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

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Spinosaurus was discovered 84 years earlier, in 1912.

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

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