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A fossil imprint of Ottoia prolifica.
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Ottoia prolifica

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A relative of insects, trilobites lived on the ocean floor during the Cambrian period.
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Trilobites

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Smithsonian researchers eat a meal in preparation for a fossil excavation
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A Squalodontid Success

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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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Smithsonian scientists apply a plaster bandage cap to a block of rock containing fossils
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Securing the Fossil

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Fossils of teeth from Giant Megatooth Shark
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Megalodon Teeth

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Blue whale skull being installed at National Museum of Natural History.
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When Did Today’s Whales Get So Big?

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

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Two researchers, looking for fossil whales, scan a rock formation in Peru's Pisco Basin.
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Searching for Fossil Whales in Peru

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A photo of an arid ocean cliff in Chile's Atacama Desert with the ocean below.
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Exploring Chile's Marine Fossil Record in the Atacama Desert

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A Smithsonian scientist with a whale fossil he excavated
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Panama Expedition Success

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Smithsonian scientists race the tide the excavate an ancient whale fossil entombed in rock
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Racing the Tide

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