Page 86 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)
P. 86
Iguanodontians
Ouranosaurus Ouranosaurus had Dryosaurus
a distinctive finlike sail
extending down the spine.
The sheep-sized
Dryosaurus had long
feet and slender, powerful
back legs, suggesting it
was a fast runner.
The sharp-edged beak
was used for gathering
plant food.
Tenontosaurus
Camptosaurus
The three long,
sharp claws on its
hands would have
enabled Tenontosaurus
to swipe at a predator.
The hand had a sharp
thumb spike that may have
been used to stab attackers or
for ripping tough plants.
Among the very first dinosaur fossils to be much smaller leaf-shaped teeth of present-day
discovered and scientifically identified was iguana lizards. Later, many entire skeletons
the tooth of an Iguanodon—one of the of Iguanodon were found, with at least 38
biggest plant-eating ornithopods. It was discovered at one site in France, so it was
found in England in 1822, and given the name probably a very common animal 135–125
84 “iguana tooth” because of its similarity to the million years ago. But Iguanodon was one of
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