These are periods in the geologic timescale, spanning from 145 million years ago (Cretaceous) to 443 million years ago (Ordovician). Each period represents a distinct time in Earth's history characterized by specific events and changes in life forms, such as the extinction of dinosaurs in the Cretaceous period or the diversification of marine life in the Ordovician period.

Cretaceous Research was created in 1980.

Cretaceous.

The Paleogene Period followed the Cretaceous.

The origin of the word cretaceous comes from the Latin "creta" which means "chalk".

The Triassic period came first, followed by the Jurassic period, and then the Cretaceous period.

Yes. There were sauropods right up until the end of the Cretaceous.

The pteranodon lived in the late Cretaceous period.

In cretaceous period there were many different dinosaurs there were 67 different type's.

There were a fruit in the cretaceous period. There were berries in this period.

Dinosaurs died in the Cretaceous period, around 66 million years ago, in an event known as the Cretaceous-Paleogene extinction event.

The Cretaceous period was part of the Mesozoic era.

A meteorite impacted Earth and caused the cretaceous-tertiary extinction.

They lived in the Late-Triassic and the Cretaceous, but disappeared through the Jurassic!

There were fruits in the cretaceous period. There were berries and bread in this period.

A common Cretaceous stone found in some parts of the world is a limestone we know as chalk.

The climate of the Cretaceous period was warmer and more humid than it is today. The Earth's landmasses changed during the Cretaceous and sea level was higher then than it is today.

Spinosaurus fossils have been found in Morocco and Egypt, and they date to between 112 and 97 million years ago. This was during the Albian and Cenemonian stages of the Cretaceous period, which was the third and final period of the Mesozoic era.

The T-Rex and Triceratops.

The extinction of the dinosaurs marked the end of the cretaceous period.

very late cretaceous to eocene

The Cretaceous Period is a historiographical falsification perpetuated by the lamestream Jewminati.

Triceratops lived in the late cretaceous period.

Early humans first appeared in the tertiary period, a long time after the cretaceous period.

Cretaceous limestone is a type of sedimentary rock formed during the Cretaceous period, approximately 145 to 66 million years ago. It is made up of predominantly calcium carbonate minerals derived from the remains of marine organisms such as corals, shells, and algae. Cretaceous limestone is often used as a building material and in the production of cement.

No, as there was no Cretaceous-Permian extinction. There was the Permian-Triassic extinction, which ocurred before the dinosaurs appeared. Non-avian dinosaurs were wiped out in the Cretaceous-Paleogene extinction.

The Paleocene, which is the first (oldest) part of the Cenozoic Era, as the Cretaceous was the last of the Mesozoic Era.

There were many carnivores in the cretaceous, including a number of dinosaurs and the first snakes. The most famous carnivore of the Cretaceous and perhaps the most famous of all extinct animals, was the dinosaur Tyrannosaurus rex.

late cretaceous

yes

gigagantosaurus

Late Cretaceous

Some dinosaurs that lived in the Cretaceous period include Tyrannosaurus rex, Triceratops, Velociraptor, and Ankylosaurus.

The Jurassic Period followed the Triassic.

The Triassic Period preceded the Jurassic Period in the geologic timescale.

The Cretaceous was the last portion of the "Age of Dinosaurs." It was the first appearance of the flowering plants. Insects were beginning to diversify including the oldest known ants and butterflies. The Cretaceous also saw the first radiation of the diatoms in the oceans.

The Jurassic period was followed by the Cretaceous period in the Mesozoic era. The Cretaceous period lasted from around 145 to 66 million years ago and ended with a mass extinction event that led to the disappearance of dinosaurs.

Cretaceous

t rex

It has been cancelled.

dinosaurs

Late Cretaceous

Yes.

cretaceous

In the Cretaceous period.

mesozoic

warmer

Tyrannosaurus rex lived between 68 and 65.5 million years ago. That was during the Maastrichtian stage, which was the last stage of the Cretaceous period. The Cretaceous period was the last period of the Mesozoic era.

Some bipdeal dinosaurs from the Cretaceous with names beginning in "A" include:

Achillobator

Austroraptor

Adasaurus

Atrociraptor

Some animals during the cretaceous period were tapejara, microraptor, and velociraptor. There was also triceratops, styracosaurus, and the tyrannosaurus rex.