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A skeleton of an ichthyosaur
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An Ichthyosaur's Bones

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serrations from sharks on a fossilized whalebone
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Bite Marks From the Past

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A shark tooth embedded in a bone
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A Tooth Left Behind

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A screenshot from video showing Brian Huber behind a microscope.
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Smithsonian Paleobiologist Brian Huber

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

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

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A bright illustration of extinct predator Hurdia victoria.
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Hurdia Victoria

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Fossilezed Hallucigenia sparso with large white spines.
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Hallucigenia

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Screenshot from video "Excavating an Extinct Toothed Whale" showing two scientists digging in the ground for fossils.
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Excavating an Extinct Toothed Whale

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an ancient worm-like creature with spikes on its back
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Hallucigenia's Spikes

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a group of ichthyosaurs swims at the ocean's surface
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Ichthyosaur Nursery

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A screenshot from video showing illustrations of ancient coral reefs.
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Coral Reefs Changing Over Time

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