What was it like in the Cretaceous Period?
The Cretaceous was a period with a relatively warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land.
What era is the Cretaceous Period in?
MesozoicCretaceous / EraThe Mesozoic Era, also called the Age of Reptiles and the Age of Conifers, is the second-to-last era of Earth’s geological history, lasting from about 252 to 66 million years ago and comprising the Triassic, Jurassic and Cretaceous Periods. Wikipedia
When did the Cretaceous Period start?
145.5 million years agoCretaceous / Began
What went extinct during the Cretaceous Period?
Much of this rich life—including all dinosaurs, pterosaurs, pliosaurs, and ammonites—perished in the extinction event at the end of the period 65 million years ago. In fact, the land, seas, and skies would never be the same in the new era that dawned after the close of the Mesozoic era.
What caused the Cretaceous extinction?
Many scientists believe that the collision of a large asteroid or comet nucleus with Earth triggered the mass extinction of the dinosaurs and many other species near the end of the Cretaceous Period.
Is Cretaceous older than Jurassic?
The Cretaceous began 145.0 million years ago and ended 66 million years ago; it followed the Jurassic Period and was succeeded by the Paleogene Period (the first of the two periods into which the Tertiary Period was divided).
What is the difference between the Jurassic period and the Cretaceous Period?
The Jurassic period, from about 200 million to 145 million years ago, ushered in birds and mammals. And the Cretaceous period, from 145 million to 66 million years ago is known for its iconic dinosaurs, such as Triceratops, and pterosaurs such as Pteranodon.
How did the Cretaceous era end?
66 million years agoCretaceous / Ended
What animals died in the Cretaceous extinction?
Tyrannosa…TriceratopsSpinosaurusAnkylosau…MosasaurusEdmontos…
Cretaceous–Paleogene extinction event/Extinct species
What came after Cretaceous?