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

Shark Ancestors

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An image of a Anomalocaris canadensis fossil.
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Anomalocaris canadensis

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Fossils of teeth from Giant Megatooth Shark
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Megalodon Teeth

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A rendering of an underwater marine scene from the Cambrian Period, featuring an arthropod, annelids, and other animals.
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A Collection of Cambrian Fossils

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Globotruncana falsostuarti -- a foram that lived about 75 million years ago, during the Cretaceous Period.
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Globotruncana falsostuarti

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

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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 hippopotamus-like creature swims underwater
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Desmostylia

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

Fossil Whale Found, Excavated, Jacketed, and Returned to STRI!

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Two men each hold a ceramic vessel at the archaeological excavation
Article

Archaeologists Study Early Whaling Community in Quebec, Canada

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