A natural Hoploscaphites nodosus ammonite with excellent preservation of the shell material. This ammonite species exhibits big ribs with large tubercles (nodes). This ammonite is from the upper Cretaceous, Pierre Shale Fm. of So. Dakota. Authenticity guaranteed. A wonderful display piece.
SD05 Size: 2-1/2"
Note - Adding 10 So. Dakota ammonites in December 2020. --> Link to So. Dakota Ammonites