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the skull of a mosasaur
Article

Meals of the Mighty Mosasaur

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An artistic rendering of an ocean landscape as it may have looked during the Archean Eon.
Slideshow

The Ocean Throughout Geologic Time, An Image Gallery

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Illustration of a four-legged proto-whale with webbed feet.
Photo

Early Whale with Webbed Feet

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Mistaken Point New Foundland
Audio

Ediacaran Fossils: One Species at a Time

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An illustration of multispecies communities of dugongs from India, Mexico and Florida
Article

The Discovery of Multispecies Communities of Seacows

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Nick Pyenson points to a skull and skeleton of a fossil whale.
Article

Excavating a "toothed" baleen whale from Vancouver Island

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A skeleton of an ichthyosaur
Photo

An Ichthyosaur's Bones

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

Archaeocyatha

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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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On average, Arctic sea ice has decreased by four percent per decade since the late 1970s.
Overview

Sea Level Rise

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a group of ichthyosaurs swims at the ocean's surface
Photo

Ichthyosaur Nursery

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