These are fossil gastropods collected near Bordeaux, France. They are Early Miocene in age which makes them approximately 16-20 million years old. The sandstone has been meticulously prepared to expose these shells. Multiple species are represented in each cluster which make each cluster unique and truly one-of-a-kind. One of the four gastropods have been identified as Oliva sp., the other three are unidentified. There are also various other shells mixed throughout the sandstone the clusters are in.