Table of Contents
- 1 Why do you think the dinosaurs were unable to survive long during the early period of their Earth life?
- 2 What happened to the dinosaurs million years ago?
- 3 How do scientist know that dinosaurs existed?
- 4 How long did the dinosaurs live on Earth?
- 5 When did dinosaurs go extinct?
- 6 How were the continents arranged during the age of dinosaurs?
Why do you think the dinosaurs were unable to survive long during the early period of their Earth life?
Because the dinosaurs were cold-blooded–meaning they obtained body heat from the sun and the air–they would not have been able to survive in significantly colder climates. Yet some species of cold-blooded animals, such as crocodiles, did manage to survive.
What happened to the dinosaurs million years ago?
Dinosaurs that failed to adapt went extinct. But then 66 million years ago, over a relatively short time, dinosaurs disappeared completely (except for birds). Many other animals also died out, including pterosaurs, large marine reptiles, and ammonites.
Were there ice ages during dinosaurs?
Long Before Dinosaurs, a Giant Asteroid Crash Caused an Ancient Ice Age. About 466 million years ago, long before the age of the dinosaurs, the Earth froze. The seas began to ice over at the Earth’s poles, and the new range of temperatures around the planet set the stage for a boom of new species evolving.
How do scientist know that dinosaurs existed?
Paleontologists are like detectives who examine the evidence that extinct animals left behind. Those clues to what dinosaurs were like are found in fossils—the ancient remains of an organism, such as teeth, bone, or shell—or evidence of animal activity, such as footprints and trackways.
How long did the dinosaurs live on Earth?
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years. If all of Earth time from the very beginning of the dinosaurs to today were compressed into 365 days (one calendar year), the dinosaurs appeared January 1…
What happened to the dinosaurs during the ice ages?
Dinosaurs evolved and died out during one of the long periods between those eras. Ice ages had nothing to do with dinosaurs. There have been at least five significant ice ages in Earth’s history, with approximately a dozen epochs of glacial expansion occurring in the past 1 million years.
When did dinosaurs go extinct?
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years. If all of Earth time from the very beginning of the dinosaurs to today were compressed into 365 days (1 calendar year), the dinosaurs appeared January 1 and became extinct the third.
How were the continents arranged during the age of dinosaurs?
At the beginning of the age of dinosaurs (during the Triassic Period, about 230 million years ago), the continents were arranged together as a single supercontinent called Pangea. During the 165 million years of dinosaur existence this supercontinent slowly broke apart. Its pieces then spread across the… Why did some dinosaurs grow so big?