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hadrosaur
(redirected from Hadrosaurs)

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
hadrosaur [′had·rə‚sȯr]
(paleontology)
A duck-billed dinosaur.


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According to the researchers, a few million years before the catastrophic event that led to the extinction of dinosaurs, several species of hadrosaurs coexisted in the Iberian Peninsula.
The blunt-toed, rounded heel tracks found in the San Juan are characteristic of hadrosaurs.
Dinosaur jaws were simple hinges that allowed biting but didn't allow the side-to-side motions that mammals use to grind food, so it was unknown how hadrosaurs, the dominant plant-eating vertebrates of the Late Cretaceous, chewed plant material.
 
 
 
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