Here is a large Placenticeras intercalare from Pierre Shale of South Dakota in ammolite preservation. This piece is a attractive and inexpensive example because the ammolie does not have gem quality. Ammolite is a valuable gemstone that is used for jewellery. | |||
Location: | Meade Country, South Dakota, USA | ||
Size of Ammonite: | about 254 mm | ||
Age: | Upper Cretaceous, Campaniumm , Pierre Shale (about 71 Mill. Years) |