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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
Slideshow

The Ocean Throughout Geologic Time, An Image Gallery

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Lenticulina secans-- this “benthic” foram lives on the seafloor. This specimen was collected from southeastern Tanzania.
Photo

Lenticulina secans

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ichthyosaurs frolic in the waves
Article

Form Equals Function for Ancient Sea Lizards and Modern Whales

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World map during last ice age
Photo

Ice Age Map of the World

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an ancient worm-like creature with spikes on its back
Photo

Hallucigenia's Spikes

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Fossil mosasaur skull and partial skeleton sitting in what looks like the dirt it was excavated from.
Article

If You Build An Ocean, Sea Monsters Will Come

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Offshore Peru, during the Eocene (~56-34 million years ago), showing two archaeocetes (ancient whales): Ocucajea picklingi and Supayacetus muizon.
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Eocene Whales and Penguins Off the Coast of Peru

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Notice the pink tentacles, which “recliners” used to filter feed.
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Recliner Rudists

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Fossilezed Hallucigenia sparso with large white spines.
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Hallucigenia

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A rendering of an ocean scene as it may have looked 65 million years ago, when an astroid fell to Earth and triggered a mass extinction event.
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Cretaceous-Paleogene Boundary (65 Million Years Ago)

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A 3D representation of a paleontological dig site with fossils colorized
Photo

An Ichthyosaur Gravesite

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Smithsonian researchers eat a meal in preparation for a fossil excavation
Slideshow

A Squalodontid Success

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