Seas opened between the continents, splitting apart Pangaea
Jurassic
The Allosaurus lived 150 million years ago. That was during the Jurassic period. The Jurassic period was part of the Mesozoic era.
Earthquakes did appear during the Jurassic period along with volcano eruptions.
During the Jurassic period, Earth's climate was generally warmer and more humid than today. Polar regions were ice-free, and forests covered much of the land. Dinosaurs flourished in this lush environment.
Jurassic time period
Brontosaurus lived during the Jurassic Period
Ammonites are very common fossils from the Jurassic Period. They were dominant in the ocean during and before the Jurassic Period.
Several organisms diversified during the Jurassic period. Crocodiles became larger and more diverse. Dinosaurs and birds diversified and thrived. Of all the organisms in the Jurassic Period, plants diversified the most.
During the Jurassic period.
Yes
There was a minor extinction event at the end of the Jurassic period. It was probably caused by global climate change. Dinosaurs like Allosaurus, Ceratosaurus, Camarasaurus, and Stegosaurus couldn't adapt to the change in temperature, so they all died out. The Cretaceous period then came after the Jurassic period had ended.
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. The Jurassic was the second period of the Mesozoic era.