Dinosaurs: Stegosaurus
Stegosaurus most distinctive feature was the row of large
plates along its back and tail. These plates were up to 2-feet in height (0.6 m)
and were made of thin bone, honeycombed with blood vessels. There has been much
debate about the function of these magnificent plates. Some scientist believe
that they were used for regulating body temperature whilst others believe they
were used self-defence or attracting mates.
In addition to these bony plates, Stegosaurus also had
two pairs of long, sharp, bony spikes at the end of its tail. These long
fearsome spikes would have made an effective weapon against potential attackers
such as Allosaurus.
Stegosaurs had very smalls brain for such large Dinosaurs
- roughly the size of a walnut. It was once believed that these brains were too
small to control the Dinosaurs large body and that a second brain was located
near the Dinosaurs hip area. Scientists
now believe that this second larger brain merely held nerves and controlled the
hind legs and tail area.
Stegosaurus probably lived in family groups and possibly
herds, however there is no conclusive evidence to suggest this.Stegosaurus (Roof Lizard)
Pronounced: STEG-o-SAW-rus
Name Means: "Roof Lizard"
Length: 30 feet (9 m)
Height: 8 feet (2.7 m)
Weight: 2 tons (1,800 kg)
Diet: Herbivore (Low-lying
Plants)
Time: Late Jurassic - 155 million years ago
Habitat: Open
Woodland
Fossils Found: Africa, Asia, Western North America
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