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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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An image of a Anomalocaris canadensis fossil.
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Anomalocaris canadensis

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A handful of fossil pieces from the Cambrian period sit on a gray background.
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Scientists and Fossils

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a fossilized ancient sea creature
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Wiwaxia

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A close-up image of a fossil shark jaw with teeth.
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Teeth and Jaw of an Ancient Shark

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Fossil Whale Digsite at Cerro Ballena, Chile
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The Whale Graveyard Whodunit

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A close up of a sediment core.
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Sediment Core Close-Up

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Fossil tooth whorl of ancient shark.
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Fossil tooth spiral

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Fossils of teeth from Giant Megatooth Shark
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Megalodon Teeth

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Squalicorax shark fossil from the Smithsonian
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Squalicorax Shark Fossil

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A fossil of the ancient shark Falcatus falcatus
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The Ancient Shark Falcatus falcatus

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This jellyfish fossil is from the Cambrian period, more than 500 million years ago.
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Fossil Jellyfish

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