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

A Collection of Cambrian Fossils

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

Shark Ancestors

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

A Squalodontid Success

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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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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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A hippopotamus-like creature swims underwater
Photo

Desmostylia

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A fossil imprint of Haplophrentis carinatus with two oar-like appendages.
Photo

Haplophrentis carinatus

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Colorful illustration of extinct Archaeocyatha that lived on the seafloor.
Photo

Archaeocyatha

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Illustration of Opabinia with five eyes and what look like scales.
Photo

Opabinia

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A fossil imprint of Ottoia prolifica.
Photo

Ottoia prolifica

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A bright illustration of extinct predator Hurdia victoria.
Photo

Hurdia Victoria

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

Trilobites

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