AMM268 Ammonite Fossil (South Dakota) Sage The clearest and sharpest recognition

The clearest and sharpest recognition guide to more than 500 plants and animal fossils

This was item #9 on the Graveyard Point Live @ 5 from October 2020

Pilbara Jasper polished specimen featuring black

and brown agate with a polished face and edges as well as visual parallax

and pink agate with a druzy-lined center

AMM268 Ammonite Fossil (South Dakota) Sage The clearest and sharpest recognitionThis 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. The surface of this fossil shows complex suture patterns in overall shades of warm brown, with little spots of red or purple iridescence. It has a smooth outer surface with a sharp spine. 3" x 2. 25" 58g Sphenodiscus