AMM271 Ammonite Fossil (South Dakota) Graveyard Point Plume Agate Purchase by the piece or

Purchase by the piece or in a one pound lot

inclusions of red jasper

The picture in the lower right shows what the material looks like cut and polished

15mm x 44mm

shades of brown

AMM271 Ammonite Fossil (South Dakota) Graveyard Point Plume Agate Purchase by the piece orThis ammonite specimen comes from South Dakota in the Cretaceous period when the area was submerged by the Western Interior Seaway millions of years ago. They are typically preserved in hard concretions that must be carefully removed. This sizeable fossil shows mixes of brown and yellow calcite with a smooth surface displaying complex leafy suture patterns. It has a fairly well preserved chamber opening and spots of red, yellow, and green iridescence.