 |
Travel back in time
to dinosaur times. But did you know that not all dinosaurs lived at the
same time? Use the clues to put the dinosaurs into the correct periods
on our time line!
The
Flash plug-in is required to play this game. If you don't have it, click here to download it for free.
|
 |
|
This information
will help you figure out when each dinosaur lived. Read carefully
for clues! |
| |
The earliest dinosaurs
and mammals date back to the late Triassic period, about 225 million
years ago. Most of the first Triassic dinosaurs were small and quick
meat-eaters that walked on their hind legs. By the end of the Triassic
period (about 200 million years ago), larger prosauropods (20-foot-long
plant-eating dinosaurs) were beginning to appear. |
| |
The Jurassic period
began about 200 million years ago and lasted about 55 million years.
Many new types of dinosaurs, mammals, and reptiles emerged during
the Jurassic, including the plated dinosaurs and the sauropods — heavy,
long-necked dinosaurs that walked on four legs. There were also large
theropods, or meat-eating dinosaurs, roaming the Earth. The first
birds (and bird-like dinosaurs) also appeared during the Jurassic
period. |
| |
|
The Cretaceous period began about 145 million years ago and ended
65 million years ago with the extinction of the dinosaurs. Flowering
plants and modern insects appeared. Dinosaurs of all shapes and
sizes walked the land, including duckbills, armored, horned, and
dome-headed dinosaurs. There were new forms of giant meat-eaters,
as well as a deadly new breed of hunter, the "raptor" dinosaur,
known for its sharp teeth and curved claw on each hand and foot.
|
|
