Why are dinosaurs extinct facts?
The exact nature of this catastrophic event is still open to scientific debate. Evidence suggests an asteroid impact was the main culprit. Volcanic eruptions that caused large-scale climate change may also have been involved, together with more gradual changes to Earth’s climate that happened over millions of years.
What are 5 facts about dinosaurs?
Top 10 Facts About Dinosaurs
- Dinosaurs were around millions of years ago!
- Dinosaurs were around in the Mesozoic Era or “The Age of Dinosaurs”.
- There were more than 700 species.
- Dinosaurs lived on all continents.
- The word dinosaur came from an English palaeontologist.
- One of the biggest dinosaurs was the Argentinosaurus.
What was the extinction of dinosaurs?
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.
What are the 3 theories of dinosaur extinction?
Some of these have dealt with:
- toxic volcanic gases and dust.
- asteroid impact.
- food shortage.
- climate change.
What would happen if dinosaurs still exist today?
After all, if dinosaurs were alive today, their immune systems would probably be ill-equipped to handle our modern panoply of bacteria, fungi and viruses. The chasm is just too large to make that a likely possibility.
What are the 5 mass extinction events?
Top Five Extinctions
- Ordovician-silurian Extinction: 440 million years ago.
- Devonian Extinction: 365 million years ago.
- Permian-triassic Extinction: 250 million years ago.
- Triassic-jurassic Extinction: 210 million years ago.
- Cretaceous-tertiary Extinction: 65 Million Years Ago.
When did mammoths go extinct?
For millions of years, woolly mammoths roamed across the globe until they disappeared around 4,000 years ago.