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Press Release 11-076

"Jurassic Park" Had it Right: Some Dinosaurs Hunted by Night

New research results show that dinosaurs didn't all dine by day

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Photo of dinosaur skull and the words Photo Gallery.

See up close the fossils the researchers studied, alongside exotic modern-day animals, in this photo gallery.

Credit: National Science Foundation

 

Photo showing a close-up of the eye socket and ring of the dinosaur Protoceratops.

Close-up of the eye socket and ring of the dinosaur Protoceratops, active by day and night.

Credit: Ryosuke Motani and Lars Schmitz


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Photo of the skeleton of the small carnivorous dinosaur Juravenator starki.

The small carnivorous dinosaur Juravenator starki was nocturnal.

Credit: Ryosuke Motani and Lars Schmitz


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Photo showing a close-up of the skull of the nocturnal Juraventor.

Close-up of the skull of the nocturnal Juraventor.

Credit: Ryosuke Motani and Lars Schmitz


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Photo of the skull of the day-active pterosaur Scaphognathus crassirostris.

The pterosaur Scaphognathus crassirostris was a day-active archosaur, evidenced by its eye.

Credit: Ryosuke Motani and Lars Schmitz


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Photo of the skull of the nocturnal carnivore Velociraptor mongoliensis.

As in the movie Jurassic Park, Velociraptor mongoliensis was indeed a nocturnal carnivore.

Credit: Ryosuke Motani and Lars Schmitz


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Photo of the skull of the large, plant-eating dinosaur Diplodocus longus.

Skull of the large, plant-eating dinosaur Diplodocus longus, active both day and night.

Credit: Ryosuke Motani and Lars Schmitz


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Cover of the April 15, 2011 issue of the journal Science.

The researchers' work is described in the April 15, 2011 issue of the journal Science.

Credit: Copyright AAAS 2011


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