geologic time scale

The Big Bang

Jan 1, 2012

It was the birth of the earth. The big bang happend about 13.5 billion years ago.

Earth Formed

Sep 5, 2012

There was a big planet that was formed after the big bang. It was the planet earth.

Precambrian time

Sep 22, 2012

The fossils are rare in this time. The continental shields appeard. There were underwater fossils. There were alot of sedimantary rocks in this period. http://www.universetoday.com/42884/precambrian-period/

Ordovician

Dec 6, 2012

The Ordovician peroid was named after the celtic tribe Ordovices. It is the second of the six periods of paleozoic. Fish appeard and they were the worlds first vegatarian.

Cambrian

Dec 19, 2012

The shelled marine invertebrates apear. It is the first geological era of the Palazoic era. There was a cambrian explosion in this period.

Silurian

Dec 22, 2012

The silurian period is extended to end of the ordovician period.There 60% of the marine species wiped out this era. There creepy crawlers in the that began to appear.

Denovian

Dec 23, 2012

the denovian period experinsed the adaptive radaition. It was named after Devon a place in soutwestern England. The denovian period was named the age of fish

Mississippian period

Dec 23, 2012

The mississipian period was amphaibians flourish.Forest and swamps coverd must land. The mississippian period was a period of marine ingression.

Pennylvanian period

Dec 25, 2012

There were gaint cockroaches nd big dragonflies. There were lots of swamps. It began 320 million years ago and it ended 286 million years ago.

Permian

Dec 26, 2012

Pandea comes together in this period. There is a mass extixtion in this period. The permian lasted about 299 to 251 years ago. The were gymnosperms that appeard in this period.

Triassic

Dec 27, 2012

Dinosaurs first appeard in this period. Mamales also appeard in this period. It was at the time the continents were together witch was called pangea.

Jurassic

Dec 28, 2012

There were dinosaurs in this period. There were flying reptiles. There were many different creatures but mostly dinosaurs. There were great plant eating animales. http://www.universetoday.com/77199/jurassic-period/

Cretaceous

Dec 29, 2012

There wer dinosaurs and mamales in this period. The mass extiction mark the end of the masozoic era. It noted that it was the last portion of the age of dinosaurs.

Paleocene

Dec 31, 2012

This was the age of mamales began. The first primates appeard in this period. It is marked as the beginning of the cenozoic era.

Ecocene

Dec 31, 2012

There were many different animals in this period. There were flying anamls, horses, and bats. It was the second to five epoches in the tertiary.

Oligocene

Dec 31, 2012

There were alot of new animales in the period. There were horses deer and camels. Primates began to dominate in the oligocene period.

Milocene

Dec 31, 2012

There wolves and racoons that appeard in this era. It was in era with lots animales and other creatures.

Pilocene

Dec 31, 2012

There were large carnivores that appeardin this period. Pilocene period was named by Sir Charles Lyell. http://www.britannica.com/EBchecked/topic/464853/Pliocene-Epoch

Pleistocene

Dec 31, 2012

There were wolly,mammoths,rhinos, and humans that appeard. There global cooling and ice ages that took place in this period.