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Brazilian predatory dinosaur with very special features

Irritator challengeri belongs to the bipedal carnivorous dinosaurs, more precisely: to the spinosaurs.

Irritator has the world's most completely preserved fossil skull of a spinosaur.

With the help of X-ray computer tomographs from the fields of medicine and materials research, scientists from Greifswald (Germany), Munich (Germany), Alkmaar (Netherlands), and Fribourg (Switzerland) have now conducted in-depth studies on this fossil and made some astonishing discoveries.

With downward tilted, fast closing jaws, Irritator probably hunted relatively small prey in what is now Brazil.

A minor sensation for the experts: when the animal opened . . .

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