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1 CE
Quaternary
The Quaternary Period is a period that’s known for the spread of humanity and climate change. During this period, glaciers advanced from the poles. The sea levels rise. A few mammals grow to enormous sizes and then develop fur coats. Humans evolve and spread all over the planet and then begin to alter the climate, resulting in climate change. -
1 CE
Today
Today, we live our everyday lives as humans. We know much about our past and how we got to where we are today. We know Thea crashed into the Earth creating the moon & our habitable planet we call home. We know much about the dinosaurs and other species who used to roam the grounds we now walk on. Our Earth has changed so much over time to get to where it is today. -
65
Tertiary
Cenozoic Era-
Grass becomes widespread. Mammals evolved dramatically, like apes and eohippus. It was also a period of time in which birds, insects, and mollusks all dramatically evolved. -
Period: 65 to 1 CE
Cenozoic Era
The Cenozoic spans from the end the extinction of non-avian dinosaurs to the present. The Cenozoic is called the Age of Mammals, because the largest land animals were mammals during that time. This period of time corresponds with the extinction of the dinosaurs and the rise of mammals. Which is why it was called the Cenozoic Era because this name means “new life” in Greek. This era is divided into 3 periods which include the Paleogene, Neogene, and the Quaternary Periods. -
Period: 65 to 1 CE
How was Earth like?
Pangea broke up into the continents, and they have moved into the positions that they are in now. The Atlantic Ocean opened. India collided with Asia and made the Himalaya Mountains. North and South America moved westward. The pressure has crumpled the western coasts to form the Rocky and Andes Mountains. -
140
Cretaceous
Mesozoic Era-
Flowering plants were founded in this era. Earth is looking more like present day. During this time, dinosaurs began to evolve and the Iguana spread its kind to every continent on the planet. Unfortunately, it was during this period that the K-T Extinction occurred, also known as the Fifth Major Extinction and the most recent one. This extinction event would bring an end to ALL dinosaurs and would cause 75% of the world’s species’ to go extinct. -
200
Jurassic
Mesozoic Era-
Pangaea split up into Laurasia and Gondwanna. First birds and earthworms were founded in this period. Huge prairies of ferns crossed the land masses and dinosaurs fed off of them. Crocodiles began to evolve as well. It was also the time when mammals began to evolve. By the end of the Jurassic Period, there was an extinction called the Jurassic-Cretaceous Extinction Event that killed off a fair number of species during this time. -
248
Triassic
Mesozoic Era-
First mammals were founded. During this period, a variety of different animals began evolving. But at the end of this period, there was an explosion in reptilian evolution and dinosaurs also began to evolve. Temperatures began to rise and the Fourth Major Extinction occurred. This event killed off all archosaurs, except for crocodiles, and almost all of the large amphibians that existed at the time. It also killed off over 30% if all marine animals. -
Period: 248 to 65
Mesozoic Era
This era can be subdivided into 3 periods – these include the Triassic, the Jurassic and the Cretaceous Periods. It's known for all of the dinosaurs that evolved during this time on the Geologic Time Scale. -
Period: 248 to 65
How was Earth like?
In the Jurassic Period the super-continents, Gondwanaland and Laurasia, collided and formed a super continent called Pangea. However, plate tectonics still continue to move and shift things. -
330
Permian
Paleozoic Era-
First insects & winged insects were founded. Pangaea is formed. The period was the last period of the Paleozoic Era. The Earth was at its driest and it was also a period which were dominated by synapsids and reptiles. Conifers also began to evolve and eventually dominated the terrain. At the end of this period was the Third Mass Extinction known by many paleontologists as the “Great Dying.” All but 5% of the world’s life would go extinct during this period. -
350
Carboniferous
Paleozoic Era-
Land animals appear, first reptiles, large fish, and ferns. The period is a place in which the average global temperatures of the world began to rise. The landscape of the Earth during time scale was mainly swamps. -
400
Devonian
Paleozoic Era-
The Devonian Period was known for an increase in the number of fish and the diversification of these fish. Many paleontologists referred this period as the Age of the Fish. This was also a time when amphibians began to evolve. It was also a time when land plants, such as trees, began to evolve. Before the end of this period, the Second Mass Extinction happened. This extinction wiped out 57% of all marine life. -
440
Silurian
Paleozoic Era-
First land plants founded. The Silurian period was when the Earth was beginning to recover from the First Major Extinction. It was a time when cold Earth began to warm and the number of marine animals dramatically rose. During this period, jaw-less fish multiplied, jawed fish began to first evolve and it is also the time when freshwater fish began to evolve. -
488
Ordovician
Paleozoic Era-
Major diversification of animal life. The first vertebrates appear. The period was time where many animal species starting evolving. Some of these species include cephalopods, snails, shellfish and primitive fish. This was also a period of time in which coral started evolving. In the Ordovician & Silurian Periods, there was a major extinction event that resulted in approximately 60% of the marine invertebrates to become extinct. This is considered to be the First Mass Extinction. -
540
Cambrian
Paleozoic Era-
First fish and first animals with backbones are founded. An event called the Cambrian Explosion happened which resulted in an unprecedented number of creatures evolving during this period. Some of the things that evolved during this time included algae and some of the animals that evolved included creatures such as trilobites. It was also during this time that most of the world’s major marine phyla started evolving. -
Period: 540 to 330
Paleozoic Era
The era began with the breakup of one super-continent and the formation of another. Plants became widespread and the first vertebrate animals colonized land. It’s name means “ancient life” in Greek and it’s known for the variety of life that rapidly began to appear. The era is divided into six geologic periods. These include: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and the Permian Period. -
Period: 540 to 330
How was Earth like?
Plate tectonics push land masses across Earth's surface. In the middle of the Silurian Period the land is locked in two super-continents called Gondwanaland and Laurasia. Glaciers cover Gondwanaland. Earth is experiencing one of its ice ages at this time. Over the next hundred million years, Gondwanaland will move north and begin to break up, and the climate will warm up. -
Proterozoic
Precambrian Era-
Life is seen in the sea. Jellyfish have been founded.Early plate tectonics. Oxygenation of the atmosphere, the Great Oxygenation Event. First eukaryote fossil at 2.1 billion years. -
Period: to 550
How was Earth like?
There are now two supercontinents called Rodinia and Pannotia. These formed by collisions of the islands made by volcanoes during the Archaean period. -
Archean
Precambrian Era-
The Earth's crust and oldest rocks is formed. Prokaryotes and first Eukaryotes are seen in this period.
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Period: to
How was Earth like?
The continents were still not formed yet. There were scattered islands. These islands were carried over the surface of Earth by plate tectonics. -
Hadean
Precambrian Era-
There was no life because this area was inhabitable; it was too hot. -
Period: to 550
Precambrian Era
The Precambrian was divided into three different periods; the Hadean, Archean, and Proterozoic.The era went from just being rock, to have life roam. -
Period: to
How was Earth like?
This is when Thea crashed into Earth, creating the moon & earth. The Formation of Earth was dust and gas that orbited the Sun. The surface of Earth was like Hades: liquid rock, boiling sulfur, and impact craters.
