DetailsRare Vascoceras costatum fossils from Nigeria. These ammonites are of cretaceous age (approx. 90 million years ago). These creatures were carnivorous free-swimming ammonites which only existed for a few million years, owing to the rarity of such species. Specimens are available in one size - 3" x 3" and come supplied with a white card tray and information label. These ammonites are perfect for a serious collector who is interested in rare marine specimens.