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THE GEOLOGIC TIMESCALE

Elena

Created on September 27, 2022

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Transcript

THE GEOLOGIC TIMESCALE

THE PRECAMBIAN

CENOZOIC

MESOZOIC

PALAEOZOIC

252 million

66 million

4.6 billion

541 million

The Precambian Era

HADEAN PERIOD

PROTEROZOIC PERIOD

ARCHEAN PERIOD

4.6 - 4.0 billion years ago

4.0 - 2.5 billion years ago

2.5 billion years ago- 541 million years ago

- Moon and Earth formation

- Water vapor cooled, which forms a global ocean.

- Two super continents were formed

- Evolution of arthropods and chordates

Palaeozoic Era

PENNSYLVANIAN PERIOD

MISSISSIPIAN PERIOD

CARBONIFEROUS PERIOD

- Jawless fish

CAMBRIAN PERIOD

SILURIAN PERIOD

PERMIAN PERIOD

DEVONIAN PERIOD

ORDOVICIAN PERIOD

- The first vertebrates were colonizing the land

- Trilobite

Mesozoic Era

TRIASSIC PERIOD

CRETACEOUS PERIOD

JURASSIC PERIOD

- Birds became more common -Seasons, cooling -K-pg extinction

-More oceans -Marine Revolution - Dinosaurs flourished

-Permain-Triassic extinction -Pangea -Dinosaur evolution

Cenozoic Era

PALEOGENE PERIOD

NEOGENE PERIOD

QUATERNARY PERIOD

PALEOCENE EPOCH

MIOCENE EPOCH

PLEISTOCENE EPOCH

Dinasours disappeared

22 - 5.3 million years ago

EOCENE EPOCH

Grande Coupure, a major extinction event

HOLOCENE EPOCH

PLIOCENE EPOCH

5.3 - 2.6 million years ago

OLIGOCENE EPOCH

Scarcity of new modern mammals

Took place the last Glaciar period, "Ice Age"