Geologic+Time+Notes+6-8

- Nicole Jimenez
 * In the Permian Period about 90% of the marine animals were going extinct at the end of this period.
 * In the Cretaceous Period about 60% of all the species died in this period.
 * In the Cretacous Period forsest started to change into forest like today.
 * In the Permian Period Pangaea was formed.
 * Most of the southern hemisphere in the Permian Period had all the SIX not SEVEN landmasses together at that time.
 * The first dinosaurs apeared in the Mesozoic Era.

during the mesozoic era the first bids and dinosaurs appeared. and the big supercontinent pangea broke apart. At the end of this period there was mass exctinction. in the permian period most of the sea life had died out. in the bretaceous periond more then 50 percent of the animaal species died out. -colleen cluess angeletti

During the Cenozoic time, the Himalayas started to rise.Extinction,seafloor spreading, and movement of plates started to occur.During the Mesozoic time, Pangea, which is the supercontient,broke apart.First birds, plants, and mammals were forming. Reptiles, fish, and mountains were forming during the Palozoic Era.Precambrian time was the time when humans started to walk the Earth. -Amanda Bogans Paleozoic Era- Cambrian Period- Oceans covered most of Earth. Trilobites are relatives to crabs. Devonian Period- first amphibians Permian Period- Pangaea formed formed Mesozoic Era- Triassic Period- Pangaea started to break apart. Dry climate Cretaceous Period- Pangaea broke apart into seven continents Cenozoic Era- Continents moved into their place today. Seasons became more pronounced By: Olamide Asanpaola

-Geologic time is subdivided in to Eons, Eras, Periods, and then Epochs. - Oldest rocks found on the bottom of rock structures and the youngest are on top. -Igneous rocks are the first rocks. -Oldest fossils found 3,000 years ago. -Paleozoic Era- era of ancient life, which began about 544 million years ago, when organisms developed hard parts, and ended with the mass extinction about 245 million years ago. -Milder back then -Trilobite- Organism with 3-lobed exoskeleton that was abundant in Paleozoic oceans and is considered to be an index fossil. -Spider, snails, and dragon flies were the first insects to appear. -Climate started to become arid and form sand dunes when Pangaea formed. -The Triassic period had the early dinosaurs, crocodiles and many others.Also volcanoes formed and erupted a lot. -Jurassic period had all dinosaurs we know about today, water was full of fish of different kinds. -Meteor hit and wiped out all the dinosaurs and species. -World started to cool and form in to the Ice Age and ended then mammals died out at the end of the LAST Ice Age. -Humans formed with many animals we know today. ~ Caitlyn Kelleher

Samuel Joseph
 * In the Grand Canyon the younget rocks are found at the top and old rooks are at the bottom
 * Fossils help tell when the organism and rock was from
 * Eons are the largest time period, which are divided into eras
 * Prechambrian time - firs rocks and earth started forming
 * End of Prechambrian - oxygen
 * paleozoic Era-Abundunt plant fossils
 * Chambrian Period- 6 major land masses
 * Warmer weather
 * Ordivician- Less oxygen
 * Dovonian- Raised Apallachiansand many new fish
 * Permian -Last periiod of Paleozoic time -Pangaea formed - Many dunes
 * Mesozoic Era - Divided into 3 periods
 * Triassic period - Pangaea breaks appart and dinosaurs and crocodiles first appeared
 * Jurrassic Period- Pangea rotated and broke appart -Warm Weather
 * Cretaceous Period - Pangea split into smaller lands -Coastlines formed
 * Cenozoic Era - The landmasses moved to their current locations...
 * most mammals survived but the wolly mammoth died out after the Ice Age

Gabrielle Fischetti =] Mesozoic Era- Highlight Events -First birds,and small mammals appeared. -First dinosaur fossils appeared -Pangea began to break apart -Birds began to have feathers -Mammals were mouse like - Forest began to look like what they do today -Ciara Lockhart 6-8 =)
 * Fossils help scientist find out what animals were alive.
 * The oldest rocks uncovered are 3,100 million years old.
 * 544 million years ago almost all organisms were knocked out!
 * Ocean and shells covered most of the land during the Chambrian
 * found trilobite during Chambrian.
 * Permain 286mya-245mya
 * 90% of animals became extinct
 * Mesozoic-first dinosaur fossils started to appear.
 * Pangea started to break apart
 * Cretacous 146-65mya
 * Rocky Mountains started to push up.
 * forest changed and looked like today
 * Quetzalcoat- biggest flying animal.
 * 60% of animals dissapeared at this time.
 * Cenozoic Era 65mya-present.