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A skeleton of an ichthyosaur
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An Ichthyosaur's Bones

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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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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 3D representation of a paleontological dig site with fossils colorized
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An Ichthyosaur Gravesite

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a fossilized jawbone and tooth of an ichthyosaur
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An Ichthyosaur Jaw Bone

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

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World map during last ice age
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Ice Age Map of the World

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A close up of a sediment core.
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Sediment Core Close-Up

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Squalicorax shark fossil from the Smithsonian
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Squalicorax Shark Fossil

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A fossil of the ancient shark Falcatus falcatus
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The Ancient Shark Falcatus falcatus

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The first known filter feeder is a large shrimp-like creature called Tamisiocaris borealis. The feather-like structures on its head were used to rake plankton from the sea.
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The First Filter Feeder

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