What is the difference between the Jurassic period and the Cretaceous Period?

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.

What makes the Cretaceous Period unique?

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.

Was the Cretaceous period before the Jurassic period?

Cretaceous Period, in geologic time, the last of the three periods of the Mesozoic Era. 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 are the three periods of dinosaurs?

Dinosaur communities were separated by both time and geography. The ‘age of dinosaurs’ (the Mesozoic Era) included three consecutive geologic time periods (the Triassic, Jurassic, and Cretaceous Periods). Different dinosaur species lived during each of these three periods.

What is the last dinosaur that lived?

African T. rex

What is the largest animal that ever lived?

blue whale

Did dinosaurs have 2 Hearts?

There’s no evidence that dinosaurs of any sort had bizarre accessory hearts, but the idea has still played a small role in the ongoing investigation into how giant dinosaurs actually lived. To start, we have to go back to ancient bones and the ways in which paleontologists put them together

What was bigger than at Rex?

Spinosaurus was larger than both T. rex and Giganotosaurus, which was previously the largest carnivorous dinosaur known

Can a Giganotosaurus kill a Spinosaurus?

The Spinosaurus leaps out of the way as 5 icicles fall. They hit the Giganotosaurus and kill it instantly

Could a Spinosaurus really kill a T Rex?

Re: Would a Spinosaurus really kill a T-Rex Yes,a Spinosaurus really could kill a T. rex

Can a Giganotosaurus kill at Rex?

Because of its size, it did not have any natural predators. Giganotosaurus had the capability of killing live prey. rex, Velociraptor and other carnivorous dinosaurs, Giganotosaurus was likely an opportunistic carnivore that also scavenged if necessary

What dinosaur can kill a mosasaurus?


What dinosaur can kill a Ankylosaurus?