History of the Earth timeline.

460

Earth is created 4.6 BYA
Period: 460 to Jan 1, 2011

Earth's History
470

Earth's surface cooled to allow solid rocks 4 BYA
500

Latest organisms were churning out oxygen 2.2 BYA
510

Prokaryotic cell begin evolving internal cell membranes 2 BYA
Jan 8, 1000

PALEOZOIC ERA- 544-505 mya. Cambrian First time organisms have hard parts and first known representatives of most animal phyla evolved
Jan 9, 1150

505-410 mya. Ordovician and Silurian Some arthropods become the first animals to live on land. First land plants evolved from aquatic ancestors.
Jan 10, 1300

410-360 mya. Devonian Some plants adapted to drier areas and invaded more habitats. Insects appeared on land.The Devonian is often called the Age of Fishes because many groups of fishes were present in the oceans. Most fishes had jaws, bony skeletons, and
Jan 11, 1450

360-245 mya. Carboniferous and Permian Reptiles evolved from certain amphibians. Winged insects evolved into many forms.Giant ferns and other plants formed vast swampy forests. Remains of ancient plants formed thick deposits of sediment that changed into
Jan 12, 1600

MESOZOIC ERA (The Age of Reptiles)-245-208 mya. Triassic Organisms that survived the Permian mass extinction became the main life forms early in the Triassic.These organisms included fishes, insects, reptiles, and cone-bearing plants.
Jan 13, 1700

208-145 mya. Jurassic Dinosaurs became the dominant animals on land. One of the first birds, Archaeopteryx, appeared.Many paleontologists think that birds are close relatives of dinosaurs.
Jan 14, 1800

145-65 mya. Cretaceous Dominant animals during this period included: reptiles, birds, turtles, crocodiles, fishes, and marine invertebrates. New forms of plant life included leafy trees, shrubs, and small flowering plants.
Jan 15, 1900

CENOZOIC ERA-65-1.8 mya. Tertiary The climate was generally warm and mild. Marine mammals such as whales and dolphins evolved. Grasses evolved, providing food for grazing mammals. Some mammals became very large, as did some birds.
Jan 16, 2000

1.8-present Quaternary Earth’s climate cooled, causing a series of ice ages. About 20,000 years ago, Earth’s climate began to warm and sea levels began to rise. In the oceans, algae, coral, mollusks, fishes, and mammals thrived. Insects, birds, and land
Mar 2, 2022

Cooled enough for water to be present 3.8 BYA
Mar 2, 2022

Unicellular prokaryotic organisms that resemble modern bacteria 3.5 BYA
Mar 2, 2022

Precambrian Time-Few fossils exist from Precambrian time because the animals were all soft-bodied. Life existed only in the sea. 650-544 MYA

Earth is created 4.6 BYA

Earth's History

Earth's surface cooled to allow solid rocks 4 BYA

Latest organisms were churning out oxygen 2.2 BYA

Prokaryotic cell begin evolving internal cell membranes 2 BYA

PALEOZOIC ERA- 544-505 mya. Cambrian First time organisms have hard parts and first known representatives of most animal phyla evolved

505-410 mya. Ordovician and Silurian Some arthropods become the first animals to live on land. First land plants evolved from aquatic ancestors.

410-360 mya. Devonian Some plants adapted to drier areas and invaded more habitats. Insects appeared on land.The Devonian is often called the Age of Fishes because many groups of fishes were present in the oceans. Most fishes had jaws, bony skeletons, and

360-245 mya. Carboniferous and Permian Reptiles evolved from certain amphibians. Winged insects evolved into many forms.Giant ferns and other plants formed vast swampy forests. Remains of ancient plants formed thick deposits of sediment that changed into

MESOZOIC ERA (The Age of Reptiles)-245-208 mya. Triassic Organisms that survived the Permian mass extinction became the main life forms early in the Triassic.These organisms included fishes, insects, reptiles, and cone-bearing plants.

208-145 mya. Jurassic Dinosaurs became the dominant animals on land. One of the first birds, Archaeopteryx, appeared.Many paleontologists think that birds are close relatives of dinosaurs.

145-65 mya. Cretaceous Dominant animals during this period included: reptiles, birds, turtles, crocodiles, fishes, and marine invertebrates. New forms of plant life included leafy trees, shrubs, and small flowering plants.

CENOZOIC ERA-65-1.8 mya. Tertiary The climate was generally warm and mild. Marine mammals such as whales and dolphins evolved. Grasses evolved, providing food for grazing mammals. Some mammals became very large, as did some birds.

1.8-present Quaternary Earth’s climate cooled, causing a series of ice ages. About 20,000 years ago, Earth’s climate began to warm and sea levels began to rise. In the oceans, algae, coral, mollusks, fishes, and mammals thrived. Insects, birds, and land

Cooled enough for water to be present 3.8 BYA

Unicellular prokaryotic organisms that resemble modern bacteria 3.5 BYA

Precambrian Time-Few fossils exist from Precambrian time because the animals were all soft-bodied. Life existed only in the sea. 650-544 MYA