4.75" Parkinsonia Rariocostata Ammonite - England

This is a 4.75" Parkinsonia rariocostata ammonite from Dorset England. There is a fossil shellfish of the species Neocrassina modiolaris attached to the back of it. They are Middle Jurassic in age, Bajocian Stage so approximately 170 million years old. You won't see this species on the market very often, particularly one this nice. It comes with an acrylic display stand.