Description: A Brief History of Geologic Time Viewers like you help make PBS (Thank you �) . Support your local PBS Member Station here: https://to.pbs.org/DonateEONS By lo
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PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ↓ More info below ↓ By looking at the layers beneath our feet, geologists have been able to identify and describe crucial episodes in life’s history. These key events frame the chapters in the story of life on earth and the system we use to bind all these chapters together is the Geologic Time Scale. Thanks to Studio 252mya for their illustrations. You can find more of their work here: https://252
The Phanerozoic Eon is part of the geologic timescale. This Eon consists of three major eras. The Paleozoic era, the Mesozoic era, and the Cenozoic era. The Paleozoic era is also called the "ancient life". Life echinoderms, trilobites, and jawless fish roamed the ocean along with sharks. Tetrapods crawled out of the ocean and started living on land. Insects began to spread along with reptiles and amphibians. The supercontinent Rodinia broke apart and then drifted back together creating Pangea. The Mesozoic
What is the Geologic Time Scale? What about the geologic time scale with events? Well, the earth is old, really old. It’s so old that it’s had 4.6 billion birthdays, but it doesn’t like to talk about it. People called geologists have counted up all the birthdays and made a big fancy chart to help remember them all. It’s called the Geologic Time Scale. A 4.6 billion years is a long time! Let’s say this represents 100 years, or a human life span. That human life span is only one pixel if we zoom out to 100,00