1. MESOZOIC ERA Presented by: Natalia Agudelo Juan Sebastián Landázuri Daniela González Rojas Fabio Baena

2.  Triassic= Age of reptiles  Start 284 million years ego  Cover 35 years  Jurassic=  Begins 213 million years ego  Cover 69 million years  Cretaceous= Is the longest period  Start 114 million years ego  Cover 79 million years HOW IS DIVIDED?

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4.  The First period  “Age of reptiles”  Crocodiles, turtles.  The earliest mammals evolved.  Small sizes (like a mouse)  Permanent extinction=extreme natural conditions TRIASSIC PERIOD 1

5.  The environment in all the period  Volcano eruption  Global cooling  Separation of the tectonic floor.  Extra= coral was already in the ocean it survive the terminal extinction ENVIRONMENTENVIRONMENT

6.  Dinosaurs were the most common animal  They rule about 150 million years in all the times  They evolved ( Archaeopteryx) JURASSIC PERIOD 2

7.  At all the Jurassic  Hot and dry  The season were more notaries  Flower plants evolved  The laurasia and gondwana separation  Extra= sharks, rays, ammonites and crocodiles appear. ENVIRONMENTENVIRONMENT

8.  The longest period  The reptiles still rule  Giants Sauropod  Massive extinction (more than half of the animals and plants)=asteroid Ouranosaurus Mosasaurus 3 CRETASEOUS PERIOD

9.  The beginning  Warm temperature  No polar ice  Sea levels were high  At the end  Several climate changes  Volcanic eruption  Sea levels were lower ENVIRONMENTENVIRONMENT

10. Triassic period Jurassic period Cretaceous period laurasia Gondwana PANGEAPANGEA

13. Bibilografy  Jesuit University. Geological Time. http://www.cotf.edu/ete/modules/msese/earthsysflr/mesoz oic.html. April 28, 2005  Col, Jeananda. Zoomdinosaurs. http://www.enchantedlearning.com/subjects/dinosaurs/mes ozoic/cretaceous/.1996  Col, Jeananda. Zoomdinosaurs. http://www.enchantedlearning.com/subjects/dinosaurs/mes ozoic/triassic/.1996  Col, Jeananda. Zoomdinosaurs. http://www.enchantedlearning.com/subjects/dinosaurs/mes ozoic/jurassic/.1996  http://www.bobainsworth.com/fossil/mesozoic.htm http://www.bobainsworth.com/fossil/mesozoic.htm  01/08/2011 http://www.youtube.com/watch?v=Mt6ip7xD3ZI http://www.youtube.com/watch?v=Mt6ip7xD3ZI