Tuesday, 2 December 2014

The Meteor That Killed The Dinosaurs


The Meteor That Killed The Dinosaurs


The Chicxulub Meteor hit the Earth 65 million years ago at the end of the Cretaceous period. The Cretaceous period was a time with very warm temperature, high sea levels and was populated with many species of dinosaurs. After it had hit, nearly all of the dinosaurs were destroyed, allowing the mammals and small animals to evolve.

 

Life Before


The Cretaceous period was the period before the Chicxulub meteor, the meteor that killed the dinosaurs. In the Cretaceous period there were millions of species of dinosaur including the Velociraptor, the Tyrannosaurus rex, the Triceratops and several species of Pterosaur. Also during the Cretaceous period there were marine dinosaur like the Tylosaurus, the Plesiosaur and the Woolungasaurus. There were also a few mammals, one of the most common ones was named the Eomia, a large rat-like creature with a big opening around its pelvic area. Preceding the Cretaceous period was the Jurassic period and following the Cretaceous period was the Paleogene period. The Cretaceous period ended with the massive dinosaur extinction which is now called the Cretaceous-Paleogene extinction event caused by the Chicxulub Meteor.

 

The Meteor


The Chicxulub Meteor killed the dinosaurs in various stages. The first was the impact of the meteor on earth and the tsunami that it caused. Secondly, the skies rained nitric and sulphuric acid causing fires, poisoning the water, and destroying all of the plants. Finally, the herbivores would die because of the lack in plant life. Then the carnivores would be killed too, because they would have had nothing left to eat. Lastly, the carrion eaters, the dinosaurs who fed off the rotten flesh of other animals and dinosaurs, will die of starvation just like all of the other dinosaurs. Millions died and the lucky ones who managed to survive have evolved over time into the things we see today.

 

How It Effected World Today


Dinosaurs dominated the world for over 180 million years before they were wiped out by the Chicxulub Meteor. And so the Age of Reptiles ended and the Age of Mammals began.  Before the dinosaur extinction, any mammal that came out of its hiding place was nearly instantly eaten by either a larger animal or a dinosaur and because of that, wasn’t able to evolve. It didn’t take very long for the small animals and birds and reptiles to thrive amongst the new soil and the new plants. The animals grew larger and larger, some even bigger than the average human. As time went on, the animals and mammals that ruled the world evolved. The giant birds shrunk to what we see now, the primates evolved into us, even the few dinosaurs that survived changed into reptiles and lizards.

 

If the Chicxulub Meteor hadn’t crashed into the Earth nearly 65 million years ago, then we would not be here right now. If the devastation of the meteor had not occurred we would not have the beautiful world we have today. The human race may have never existed without

The Meteor That Killed The Dinosaurs


 

 

 

Bibliography


Coffey, Jerry. The Asteroid That Killed The Dinosaurs. (2009). http://www.universetoday.com/36697/the-asteroid-that-killed-the-dinosaurs/. Retrieved November 9th 2014.

Unknown. Cretaceous–Paleogene extinction event. (2014). http://en.wikipedia.org/wiki/Cretaceous%E2%80%93Paleogene_extinction_event.  Retrieved November 10th 2014.

Wilson, Tracy. What if the Chicxulub meteor had missed the Earth? (2008). http://science.howstuffworks.com/environmental/earth/geology/chicxulub-meteor.htm. Retrieved November 10th 2014.

Unknown. Cretaceous. (2014). http://en.wikipedia.org/wiki/Cretaceous. Retrieved November 9th 2014.

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