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The Archosaurs were considered the dominant land animals of the Jurassic Period. These include all non-avian dinosaurs, crocodilians, and pterosaurs. It is generally believed that their modern descendants are modern birds and crocodiles, alligators, caimans, and gharials.

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What period came first Jurassic cretaceous or triassic?

jurassic The Triassic was the earliest period of the Mesozoic, followed by the Jurassic then the Cretaceous. The Cretaceous was of the greatest duration.


Why was Jurassic period called Jurassic period?

The Jurassic period is named after the Jura Mountains in Switzerland where significant geological strata from this time period were first studied. These rocks contain abundant fossils from the Jurassic period, which lasted from approximately 201 to 145 million years ago.


What is the environment like in the Jurassic period compared to the present?

During the Jurassic period, the environment was warmer and had higher levels of carbon dioxide in the atmosphere compared to the present. The landmasses were generally located closer together, forming the supercontinent Pangaea. The Jurassic period had a diverse range of plant and animal species, including dinosaurs, which dominated the terrestrial ecosystems.


Which was earlier the Triassic or Jurassic Period?

The Triassic Period occurred before the Jurassic Period. The Triassic Period lasted from about 251 million to 201 million years ago, while the Jurassic Period followed, lasting from about 201 million to 145 million years ago.


How was the cretaceous period different from the Jurassic period?

The Cretaceous period followed the Jurassic period and lasted from about 145 million to 66 million years ago. In the Cretaceous period, flowering plants became more dominant, dinosaurs continued to diversify, and large marine reptiles like mosasaurs thrived. However, the end of the Cretaceous period marked by a mass extinction event where dinosaurs and many other species went extinct.

Related Questions

What were some interesting sights in the Jurassic period?

Probably the most interesting sights during the Jurassic Period would be the plethora of dinosaurs. The world was dominated by these creatures at that time.


What Geological Period preceded the Jurassic Period?

after Jurrasic period it is the Cretaceous period


What period was the middle Jurassic period in?

The Middle Jurassic Epoch (175.6 - 161.2Ma) was in the Jurassic Period (199.6 - 145.5Ma).


What was the atmosphere like during the Jurassic period?

During the Jurassic period, the atmosphere was warmer and had higher levels of oxygen compared to today. There were lush forests with a diverse range of plant and animal species, including dinosaurs and early mammals. The climate was relatively stable and supported the evolution of many iconic prehistoric creatures.


Did people live in Jurassic time?

No, humans did not exist during the Jurassic period. This time period, which occurred about 201 to 145 million years ago, was dominated by dinosaurs and other prehistoric creatures. Humans did not evolve until much later, closer to about 300,000 years ago.


Were people alive in the Jurassic period?

No!!! There were no people alive in the Jurassic period.


Which period is older than the Triassic period?

The Jurassic Period followed the Triassic.


What era and period is the allosaurus from?

The Allosaurus lived 150 million years ago. That was during the Jurassic period. The Jurassic period was part of the Mesozoic era.


What period came first Jurassic cretaceous or triassic?

jurassic The Triassic was the earliest period of the Mesozoic, followed by the Jurassic then the Cretaceous. The Cretaceous was of the greatest duration.


What happened right after the Jurassic period?

After the jurassic period started the Mesozoic Era.


What was the dominant land animal during the Jurassic and cretaceous period?

The dinosaurs were the dominant land animals during the Jurassic and Cretaceous periods, rising to dominance during the late Triassic.


Why was Jurassic period called Jurassic period?

The Jurassic period is named after the Jura Mountains in Switzerland where significant geological strata from this time period were first studied. These rocks contain abundant fossils from the Jurassic period, which lasted from approximately 201 to 145 million years ago.