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 8.5x5.5" and about 1" thick. I can't locate any additional information on these ammonites, other than a reference to them being Jurassic in age. Comes with an acrylic display stand.