cretaceous period john bonsol maricarmen velazquez noemi medina

Cretaceous Period

John BonsolMaricarmen Velazquez

Noemi Medina

Plants

• During the Cretaceous Period, flowering plants (angiosperm) started to appear.

• The evolution of flowering plants caused the evolution of bees.

• The evolution of plants and bees is an example of co evolution.

Examples of Plant Fossils

Climate

• Volcanic activity caused a rise in temperature in the Cretaceous Period.

• Volcanoes not only caused a rise temperature, they also made large amounts of carbon dioxide.

• The Cretaceous Period was wetter then the Jurassic Period.

• Snow also appeared in arctic regions.

Examples of Climate

Animals

• There were many types of animals in the Cretaceous, dinosaurs; mammals; flying reptiles; marine reptiles; and birds.

• Both marine and flying reptiles are not dinosaurs.

• Scientists believe that the dinosaurs went extinct because they became too well adapted to their environment.

Examples of animal fossils

Events

• The most important event in the cretaceous was when the dinosaurs went extinct.

• There are many theories on how they went extinct, but most people believe that a meteor crashed into Earth.

• An other event in the Cretaceous was when the climate change

Meteor Crashing into Earth

Interesting Facts

• Dinosaurs were the main species during the Cretaceous Period.

• After the Cretaceous, mammals became the dominant species.

• The Cretaceous was when the dinosaurs went extinct.

• As mentioned in the animals slide, marine and flying reptiles are not dinosaurs.

Cretaceous

Mammals dominant species

Bibliography

• Wikipidia.com