3.2" Hoploscaphites Brevis Ammonite With Gastropods
This is a beautiful, 3.2" wide Hoploscaphites brevis from the Pierre Shale of South Dakota. It was found inside of a hard concretion and the rock had to be meticulously prepared away.
For sale at: https://www.fossilera.com/fossils/3-2-hoploscaphites-brevis-ammonite-with-gastropods