Fossil Collection Ammonites
Ammonites
This fossil ammonite is from the Jurassic Period and was found in Morocco.
The ammonite shell had sections, with the living animal occupying only the section of the shell closest to the head. As the soft-bodied ammonite got larger, it grew a new shell section and sealed off the old one with a layer called the septa.
There were many different species of ammonites during the Paleozoic And Mesozoic Eras. There were so many types that scientists use ammonites to tell the age of rocks that they are found in. This is called index fossils. Ammonites along with the dinosaurs and many other animals became extinct 65 million years ago.
