Shells may represent oldest known beads Bruce Bower Three sea-snail shells previously discovered at Stone Age sites in Israel and Algeria contain intentionally fashioned holes in their centers, making the finds the oldest known examples of personal decoration, a research team says. HOLE IN TWO. Two perforated shells from an Israeli site dated to between 135,000 and 100,000 years ago appear in different views (top group and bottom group). Vanhaeren, F. d'Errico The trio of perforated shells apparently served as beads, conclude Marian Vanhaeren of University College London and her colleagues. Holes in the shells look nothing like those that...