Fossil Fish

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Bolton Museum has a number of good fish fossils, local, British and also from America.

A fossil fish called Dapedium

This is a type of fish called Dapedium which lived during the lower Jurassic period, 200-175 million years ago.
They had rounded peg-like teeth for crunching through small crustaceans and molluscs.
They had thick protective scales as a defence against predation. However, scales of Dapedium have been found as fossilised stomach contents in ichthyosaurs, so they were by no means safe!

A modern relative of Dapedium, the Shortnose Gar, can be seen alive and well in Bolton Aquarium.