geologic time

By jeudy

  • precambiam time

    The precambriam time was a streth of 4 thousand million yaers when the first animals left their traces.It was about sevsn-eights of earths history.Life arose,the first tectonic plate arose and began to move,eukaryotic cells evolved andby the end multicellular organisms, including the frist animals evolved.http://www.ucmp.berkeley.edu/precambrian/precambrian.html

  • paleozoic era

    The palozoic is btween 543 to 248 million years ago. two major events in history of animal life.Roughly haftway between animal,fungi,and plants the insects took the air.The largest mass extinction in history wiped out approximately 90% of all marine animal species.There was large outcrops of limestone.http://www.ucmp.berkeley.edu/paleozoic/paleozoic.html

  • Mesozoic Era

    The mesozoic era wasbetween 248 to 65 million years ago. Dinosaurs evolved.Dinosaurs became extented between 180 years.http://www.ucmp.berkeley.edu/mesozoic/mesozoic.html