Scaphites Ammonite | South Dakota smokey quartz This item is 2” x

This item is 2” x 1

flower-shaped mineral formation of Selenite and sand that forms in arid

these specimens are generally considered safe to handle because the radioactivity is trapped within the silica structure

25" and weighs 2

Scaphites Ammonite | South Dakota smokey quartz This item is 2” xScaphites ammonites are extinct cephalopods known for their distinctive shells, featuring a tightly coiled juvenile stage that transitions into a straight, hook like adult body chamber. Found predominantly in Late Cretaceous marine deposits, these marine invertebrates had chambered shells for buoyancy, likely preyed on small organisms, and are important index fossils, with common South Dakota specimens showcasing iridescent shells and prominent ribs.