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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