Dinosaurs
⭐ MasteredDinosaurs lived millions of years ago and died out about 66 million years ago. We learn about them from fossils.
Birds are the living relatives of dinosaurs.
All about Dinosaurs
Dinosaurs were a group of reptiles that lived on land for about 165 million years. They appeared roughly 230 million years ago and died out about 66 million years ago, when a huge asteroid and volcanic activity changed the climate.
Not all dinosaurs were huge. Some were as small as a chicken. Many birds are actually living dinosaurs, descended from small feathered dinosaurs. Scientists learn about them from fossils, footprints and eggs.
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Real-life uses of Dinosaurs
- Learning how life recovered after mass extinctions
- Explaining the evolution of birds
- Inspiring museum displays and films about the past
Frequently asked questions about Dinosaurs
Did humans live at the same time as dinosaurs?
No. Non-bird dinosaurs died out about 66 million years ago, long before the first humans appeared.
What was the biggest dinosaur?
Scientists debate this, but giants such as Argentinosaurus and Patagotitan were among the largest land animals ever known.
Are birds dinosaurs?
Yes. Birds are the living descendants of a group of small, feathered dinosaurs.