Jacob+STCOS

= = Hi I am Jacob.This is my first time on ETASC. Hope you enjoy my wiki! ​The Three Periods

There are 3 periods in the Mesozoic Era .There is the Triassic, Jurrasic and the Cretaceous period.

The first Period of the dinosaurs was the Triassic period which contained mostly carnivores and only at least 5 species of herbivores ! There was also a massive amount of volcano activity than today .There was still lots of sea creatures that .have not yet evolved into dinosaurs yet.

The second period was the Jurrasic period, where there was more evolved sea creatures. There was more plants ​ and new species of dinosaurs like more types of raptors. There where more evolved plants and taller trees .Some volcanos died away in the Jurrasic. Also some volcanos became active again.

The third and last period was Cretaceous where loads of dinosaurs evolved like the Tyransaurus Rex ,the Allosaurus,Albertosaurus and the Troodon.

There are many beliefs on how the dinosaurs became extinct like increased volcanic activity ,that water levels rised, an asteroid hit earth blotting out the sun or even earthquakes that buried the dinosaurs.The dinosaurs extinction could also be caused by a number of things.

Top Ten Killer Dinosaurs 1.Deinonychus 2. Tyrannosaurus Rex 3.Spinosaurus 4.Allosaurus ​5.Albertosaurus 6.Carcharodontosaurus 7.Troodon 8.Gigantosaurus 9.Velociraptor 10.Dilophsaurus

When I went to It suprised me how big it was when it fitted a bit over ! I liked it a lot because you got to uncover fossils and also looked up facts. I found some things that were amazing at sight aswell as interesting.

The differences between reptiles then and reptiles now is... They have scales like todays reptiles. They have little claws. They have a slight snout ( Nose ).





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