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a fossilized ancient sea creature
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Wiwaxia

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Illustration of the Paleozoic shallow water habitat.
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A Mississippian Marine Habitat (359 - 318 Million Years Ago)

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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
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The Archean Eon (4,600 – 2,500 Million Years Ago)

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Artistic rendering of an ancient shark, Helicoprion.
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Illustration of Helicoprion

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Mistaken Point New Foundland
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Ediacaran Fossils: One Species at a Time

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A hippopotamus-like creature swims underwater
Article

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

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A shark tooth embedded in a bone
Article

What the Megalodon Left Behind

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A Hawaiian petrel in flight
Article

4,000 Years of Marine History through the Eyes of a Seabird

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

Shark Ancestors

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