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Photograph of the model of a Giant Megatooth Shark, taken from the front..
Slideshow

Shark Ancestors

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Squalicorax shark fossil from the Smithsonian
Photo

Squalicorax Shark Fossil

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A close-up image of a fossil shark jaw with teeth.
Article

Shark Teeth Tell Great White Shark Evolution Story

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A close-up image of a fossil shark jaw with teeth.
Photo

Teeth and Jaw of an Ancient Shark

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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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Fossils of teeth from Giant Megatooth Shark
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Megalodon Teeth

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Fossil tooth whorl of ancient shark.
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Fossil tooth spiral

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Blue whale skull being installed at National Museum of Natural History.
Article

When Did Today’s Whales Get So Big?

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

A Squalodontid Success

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Complete Fish Skeleton Discovered by Smithsonian Scientists in Panama
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Fish Skeleton Discovery

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Smithsonian Scientists Dig a Trench Around a squalodontid Skull
Article

Expedition to Excavate a Fossil Whale

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

New Archaeocetes from Peru Are the Oldest Fossil Whales from South America

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