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The Archean Eon (4600 – 2500 Million Years Ago)

The Archean Eon (4600 – 2500 Million Years Ago)

An artistic rendering of an ocean landscape as it may have looked during the Archean Eon. (The Archean World / Peter Sawyer)

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Fossil Mosasaur Skull

Fossil Mosasaur Skull

A fossil mosasaur skull and partial skeleton excavated from Angola's costal cliffs for display in “Sea Monsters Unearthed.”

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Ocean Through Time

Ocean Through Time

Relatives of insects, crabs, and spiders, there were over 20,000 trilobite species that lived between the Cambrian and the end of the Paleozoic Era when they ...

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