Top picture: T. gibbosula and C. rustica shells found in layer 4c of your cave in Morocco, which had been beads from what on earth is now generally known as the oldest jewelry on this planet. Resource: A. Bouzouggar, INSAP, Morocco / Many authors have explained achievable iconographical influences from https://medium.com/@spoilmevintagediy/the-rich-history-of-beadwork-a-journey-through-the-ages-4e4fd2e474cf