
Journey back in time to discover the incredible history of Earth before humans arrived.

Prehistoric
Earth
Precambrian Time
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Span: From the formation of Earth (about 4.6 billion years ago) to around 541 million years ago.
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Historical Fact: This is the earliest part of Earth's history, where life began with simple, single-celled organisms.
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Life forms: Cyanobacteria (blue-green algae), simple multi-celled organisms.

Cambrian Period
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Span: About 541 to 485 million years ago.
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Historical Fact: Known as the "Cambrian Explosion" because of the sudden appearance of many different types of life.
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Life forms: Trilobites, Anomalocaris, early brachiopods.

Ordovician Period
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Span: About 485 to 443 million years ago.
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Historical Fact: Marine life flourished, and the first fish appeared.
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Life forms: Graptolites, early fish (like jawless fish), nautiloids.

Silurian Period
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Span: About 443 to 419 million years ago.
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Historical Fact: Life began to colonise land, including the first simple plants.
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Life forms: Eurypterids (sea scorpions), early land plants (like Cooksonia), jawed fish.

Devonian Period
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Span: About 419 to 359 million years ago.
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Historical Fact: Known as the "Age of Fishes" because fish diversified greatly.
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Life forms: Placoderms (armored fish), early amphibians, first forests with plants like Archaeopteris.

Carboniferous Period
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Span: About 359 to 299 million years ago.
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Historical Fact: Extensive forests of ferns and trees formed vast coal deposits.
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Life forms: Giant insects (like Meganeura), early reptiles, amphibians.

Permian Period
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Span: About 299 to 252 million years ago.
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Historical Fact: Ended with the largest mass extinction in Earth's history, wiping out most marine and terrestrial species.
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Life forms: Dimetrodon, early therapsids (mammal-like reptiles), trilobites (near the end).

Triassic Period
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Span: About 252 to 201 million years ago.
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Historical Fact: Dinosaurs and mammals first appeared during this period.
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Life forms: Coelophysis (early dinosaur), Lystrosaurus (therapsid), early mammals (like Morganucodon).

Jurassic Period
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Span: About 201 to 145 million years ago.
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Historical Fact: Dinosaurs dominated the land, and the first birds appeared.
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Life forms: Allosaurus, Brachiosaurus, Archaeopteryx (early bird).

Cretaceous Period
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Span: About 145 to 66 million years ago.
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Historical Fact: Ended with a mass extinction caused by an asteroid impact, wiping out the dinosaurs.
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Life forms: Tyrannosaurus rex, Triceratops, Velociraptor, flowering plants (like magnolias).

Paleogene Period
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Span: About 66 to 23 million years ago.
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Historical Fact: Mammals diversified and became the dominant land animals after the dinosaurs' extinction.
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Life forms: Early primates, large mammals like the Paraceratherium (giant rhino), early horses.

Neogene Period
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Span: About 23 to 2.6 million years ago.
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Historical Fact: Further evolution of mammals and birds, with significant cooling leading to the ice ages.
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Life forms: Mammoths, saber-toothed cats, early human ancestors (like Australopithecus).

Quaternary Period
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Span: About 2.6 million years ago to the present.
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Historical Fact: This period includes the Ice Ages and the rise of humans.
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Life forms: Woolly mammoths, giant ground sloths, early humans (Homo sapiens).


