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Rudist clams are mollusks that went extinct about 65 million years ago.

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Rudist Clams

January 2010

An Illustration of small tentacled fossils.

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Ancient Entoproct Community

August 2015

This jellyfish fossil is from the Cambrian period, more than 500 million years ago.

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Fossil Jellyfish

November 2015

A rendering of an underwater marine scene depicting life ~145-65 million years ago, when rudist clams were the major reef builders.

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Long Before Coral, Mollusks Built the Ocean's Reefs

December 2009

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