Page 68 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

Mobile necks

The age of dinosaurs Diplodocus

Diplodocus had 15
neck bones—some were
3 ft (1 m) long.

Mamenchisaurus
had 19 neck bones— Coelophysis
the most of any
known dinosaur. Einiosaurus

Mamenchisaurus

The neck was just
long enough to graze This dinosaur had
on low-growing plants. a long, flexible neck.

Some dinosaurs—especially the longer than the neck of
plant-eating sauropods—had such a full-grown giraffe. Dinosaur
astonishingly long necks that it is hard neck bones, or vertebrae,
to imagine how they held their heads were full of air cavities that
up. The neck of Mamenchisaurus could made them light, enabling the animals to
be up to 59 ft (18 m) long, which is eight times strip leaves from tall trees. Small, nimble

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