This image is of a flattened ammonite fossil called
Acanthopleuroceras valdani. It was found in the Lias of Lyme Regis England.
This animal swam the oceans during
the Lower Jurassic Period.
Fossil on display
at the Lyme Regis Museum in England as of August 2016.
Learn more at
www.lymeregismuseum.co.uk