Ammonites were predatory, squid-like creatures that lived in coil-shaped shells. They constantly added to their shell as they grew but only lived in the outer chamber.
Ammonites are shaped like a ram's horn. They were named after the Egyptian God Ammon who is depicted as a man with ram's horns. The fossil was considered Ammon's stone, thus the name Ammonite.
Though they are now extinct, ammonites appeared more than 400 millions years ago and lived till 65 million years ago. They became extinct at the same time as Dinosaurs.
Ammonites have been found in the Sahara Desert and in Alberta, which were once ancient seabeds.
