Ammonite Fossil

December 12, 2018


December 2018 Viewer's Choice

Photographer: Imad Elkati 
Summary Author: Imad Elkati

The photo above showing an ammonite fossil in a calcareous rock was taken in the Middle Atlas Mountains of Morocco, near a small village called Marhraoua. The rock is from the Jurassic period. Ammonites first appeared during the Devonian and died out during the Cretacious, existing for some 300 million years. They're considered excellent index fossils since we can determine the age of rocks based on the species of the ammonites found. Photo taken on September 2, 2018.