Plate of Pyritized Ammonites - Oujda, Morocco

This is a plate of numerous small, iron pyrite replaced ammonite fossils collected near Oujda, Morocco. The plate is 5.4x5" and about 0.9" thick. I can't locate any additional information on these ammonites, other than a reference to them being Jurassic in age. It comes with an acrylic display stand.