An Ammonite shell looks very much like a curly ram’s horn. That’s also where the name comes from. It’s named after the Egyptian god Ammon whose symbol was a ram’s horn. That shell was home to a mollusc which had ten tentacles like a squid. The animal used the shell like a submarine and was very good at floating thanks to the shell.
The male and female look different. This is called sexual dimorphism. The male has a hook-shaped shell, while the female has a curly shell.
One of its enemies was the prehistoric squid without a shell. This creature attacked the ammonite from behind and bit through its prey’s shell.
The ammonites lived from the Devonian period (410-360 million years ago) and died out at the same time as the dinosaurs at the end of the Chalk period.