By: Andres Vargas Sergio Madrigal Federico Monge

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Presentation transcript:

By: Andres Vargas Sergio Madrigal Federico Monge Cretaceous Era By: Andres Vargas Sergio Madrigal Federico Monge

Cretaceous Period Cretaceous Period lasted 71 million years. Extinction occurred around 65.5 million years ago. Species were mostly dinosaurs and reptiles.

Extinction The Cretaceous Tertiary mass extinction took place 65 million years ago. 75% of species got extinct. Non – avian Dinosaurs Pterosaurs Marine reptiles (Not all)

Facts During that time, marine reptiles, ammonites, and dinosaurs were there. Hot warm climate. The end of this period created division between Mesozoic and Cenozoic eras. Scientists think it could have been gradual instead of a very quick extinction.

Causes Scientists believe it was caused by a giant meteor. Another theory, is that there were several strong volcanoes explosions and the ahes cover up the sun.

Species Ammonites

Marine Reptiles