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

Mystery of An Ichthyosaur Graveyard Revealed

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an ancient worm-like creature with spikes on its back
Photo

Hallucigenia's Spikes

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

Ichthyosaur Nursery

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ichthyosaurs frolic in the waves
Article

Form Equals Function for Ancient Sea Lizards and Modern Whales

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A close up of a sediment core.
Photo

Sediment Core Close-Up

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Color illustration of an ancient bivalve.
Photo

Elevator Rudists

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Color illustration of an ancient bivalve.
Slideshow

Rudist Reefs

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

The Archean Eon (4,600 – 2,500 Million Years Ago)

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

Globotruncana falsostuarti

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Fossil mosasaur skull and partial skeleton sitting in what looks like the dirt it was excavated from.
Article

If You Build An Ocean, Sea Monsters Will Come

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A rendering of an ocean scene as it may have looked 65 million years ago, when an astroid fell to Earth and triggered a mass extinction event.
Photo

Cretaceous-Paleogene Boundary (65 Million Years Ago)

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A shark tooth embedded in a bone
Article

What the Megalodon Left Behind

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