The end of the Silurian period and the beginning of the Devonian period was not defined by an extinction event, but by the distinctive rock formations of the period. As a result the end of the Silurian period is uncertain by +/- 2.8 million years.
Almost every geologic period ends with some sort of extinction event. There is some evidence for this happening at the end of the Jurassic, although not by any means a major extinction event (unless it was your species that became extinct!).
it ended by a comet that failed to stop , and hit the area, and ended the lives of any plants and animals living in that period. read by:sciencechannel
the dinosaurs envoled
The Jurassic period is named for the Jura Mountains in Europe. The limestone in those mountains dates to the Jurassic.
The Pangaea split is the difference between the Cretaceous period and the Jurassic period. The split took place in the Jurassic period.
Cretaceous period.
jurassic The Triassic was the earliest period of the Mesozoic, followed by the Jurassic then the Cretaceous. The Cretaceous was of the greatest duration.
the dinosaurs envoled
the dinosaurs envoled
The Jurassic period ended 145+/- 4 million years ago. It took place between the Triassic period and the Cretaceous period.
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.
The Triassic Period ended 201.3 million years ago. It was the period in which the first dinosaurs evolved. The Triassic was followed by the Jurassic period.
The Jurassic period is named for the Jura Mountains in Europe. The limestone in those mountains dates to the Jurassic.
The Jurassic Period was named after the Jura Mountains, which are located in Europe. This period lasted from approximately 201.3 to 145 million years ago and is known for the dominance of dinosaurs and the diversification of marine life.
after Jurrasic period it is the Cretaceous period
in the Jurassic period the atmosphere was about 14.7. in the Jurassic period the atmosphere was about 14.7.
The Middle Jurassic Epoch (175.6 - 161.2Ma) was in the Jurassic Period (199.6 - 145.5Ma).
The Jurassic period extended from 200 million BCE to 146 million years BCE. It lasted 54 million years.
The Pangaea split is the difference between the Cretaceous period and the Jurassic period. The split took place in the Jurassic period.